{"abstract":"A proxy coalesces nearby requested spans into economical origin reads: new fetches map to their newly allocated index.","category":"HTTP ranges","checks":8,"contract":"x contains request rows [start,stop] with half-open nonnegative bounds, a nonnegative max-gap, and a set of forbidden byte positions. Empty requests contribute no work. Sort requests by start/stop, merge overlapping or nearby reads only if the gap has no forbidden byte. Return fetch spans and, in original request order, [fetch-index,offset-within-fetch,count] mappings. Empty requests map to null. This model plans origin reads only and does not redefine inclusive wire range semantics.","evaluation_group":"s3-http_ranges-coalesced-origin-fetch","failed_approach":"The partial repair uses rows=[(a,b,i) for i,(a,b) in enumerate(x['requests']) if a<b]\nrows.sort(key=lambda r:(r[0],r[1]))\nfetches=[]\nassignments={}\nfor a,b,i in rows:\n    merge=bool(fetches) and a<=fetches[-1][1]+x['gap']\n    if merge and any(p in x['forbidden'] for p in range(fetches[-1][1],a)): merge=False\n    if merge:\n        index=len(fetches)-1\n        fetches[index][1]=max(fetches[index][1],b)\n    else:\n        index=0\n        fetches.append([a,b])\n    assignments[i]=index\nmapping=[]\nfor i,(a,b) in enumerate(x['requests']):\n    if a==b: mapping.append(None); continue\n    index=assignments[i]\n    mapping.append([index,a-fetches[index][0],b-a])\nreturn [fetches,mapping], which still violates the stated contract.","family":"s3-http_ranges-coalesced-origin-fetch-assignment-index","id":"FA-27066","implementations":{"attempt":{"sha256":"19f1e10d8f0dcd000450e04339693ef8a3d891984cc612caa84c263cf01a2a9b","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    rows=[(a,b,i) for i,(a,b) in enumerate(x['requests']) if a<b]\n    rows.sort(key=lambda r:(r[0],r[1]))\n    fetches=[]\n    assignments={}\n    for a,b,i in rows:\n        merge=bool(fetches) and a<=fetches[-1][1]+x['gap']\n        if merge and any(p in x['forbidden'] for p in range(fetches[-1][1],a)): merge=False\n        if merge:\n            index=len(fetches)-1\n            fetches[index][1]=max(fetches[index][1],b)\n        else:\n            index=0\n            fetches.append([a,b])\n        assignments[i]=index\n    mapping=[]\n    for i,(a,b) in enumerate(x['requests']):\n        if a==b: mapping.append(None); continue\n        index=assignments[i]\n        mapping.append([index,a-fetches[index][0],b-a])\n    return [fetches,mapping]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('assignment-index fixture 0', json.loads(json.dumps(solve({'requests':[[4,6],[0,2]],'gap':2,'forbidden':[]}))), json.loads(json.dumps([[[0,6]],[[0,4,2],[0,0,2]]])))\ncheck('assignment-index fixture 1', json.loads(json.dumps(solve({'requests':[[0,2],[4,6]],'gap':2,'forbidden':[3]}))), json.loads(json.dumps([[[0,2],[4,6]],[[0,0,2],[1,0,2]]])))\ncheck('assignment-index fixture 2', json.loads(json.dumps(solve({'requests':[[0,5],[2,3]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,5]],[[0,0,5],[0,2,1]]])))\ncheck('assignment-index fixture 3', json.loads(json.dumps(solve({'requests':[[0,2],[2,4]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,4]],[[0,0,2],[0,2,2]]])))\ncheck('assignment-index fixture 4', json.loads(json.dumps(solve({'requests':[[0,0],[3,3]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[],[None,None]])))\ncheck('assignment-index fixture 5', json.loads(json.dumps(solve({'requests':[[2,4],[8,9]],'gap':1,'forbidden':[]}))), json.loads(json.dumps([[[2,4],[8,9]],[[0,0,2],[1,0,1]]])))\ncheck('assignment-index fixture 6', json.loads(json.dumps(solve({'requests':[[0,N],[N,2*N]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,2*N]],[[0,0,N],[0,N,N]]])))\ncheck('assignment-index fixture 7', json.loads(json.dumps(solve({'requests':[],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[],[]])))\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"00cfd35a0876a5ea09b396bc4765bc73d1d23cfe39d21a9117109d103be08eb1","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    rows=[(a,b,i) for i,(a,b) in enumerate(x['requests']) if a<b]\n    rows.sort(key=lambda r:(r[0],r[1]))\n    fetches=[]\n    assignments={}\n    for a,b,i in rows:\n        merge=bool(fetches) and a<=fetches[-1][1]+x['gap']\n        if merge and any(p in x['forbidden'] for p in range(fetches[-1][1],a)): merge=False\n        if merge:\n            index=len(fetches)-1\n            fetches[index][1]=max(fetches[index][1],b)\n        else:\n            index=max(0,len(fetches)-1)\n            fetches.append([a,b])\n        assignments[i]=index\n    mapping=[]\n    for i,(a,b) in enumerate(x['requests']):\n        if a==b: mapping.append(None); continue\n        index=assignments[i]\n        mapping.append([index,a-fetches[index][0],b-a])\n    return [fetches,mapping]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('assignment-index fixture 0', json.loads(json.dumps(solve({'requests':[[4,6],[0,2]],'gap':2,'forbidden':[]}))), json.loads(json.dumps([[[0,6]],[[0,4,2],[0,0,2]]])))\ncheck('assignment-index fixture 1', json.loads(json.dumps(solve({'requests':[[0,2],[4,6]],'gap':2,'forbidden':[3]}))), json.loads(json.dumps([[[0,2],[4,6]],[[0,0,2],[1,0,2]]])))\ncheck('assignment-index fixture 2', json.loads(json.dumps(solve({'requests':[[0,5],[2,3]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,5]],[[0,0,5],[0,2,1]]])))\ncheck('assignment-index fixture 3', json.loads(json.dumps(solve({'requests':[[0,2],[2,4]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,4]],[[0,0,2],[0,2,2]]])))\ncheck('assignment-index fixture 4', json.loads(json.dumps(solve({'requests':[[0,0],[3,3]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[],[None,None]])))\ncheck('assignment-index fixture 5', json.loads(json.dumps(solve({'requests':[[2,4],[8,9]],'gap':1,'forbidden':[]}))), json.loads(json.dumps([[[2,4],[8,9]],[[0,0,2],[1,0,1]]])))\ncheck('assignment-index fixture 6', json.loads(json.dumps(solve({'requests':[[0,N],[N,2*N]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,2*N]],[[0,0,N],[0,N,N]]])))\ncheck('assignment-index fixture 7', json.loads(json.dumps(solve({'requests':[],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[],[]])))\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"a1c6de8a6ebb6cf3fbdc7be8ee24ca4e9711b571be4e73dd72e91d77b66fd216","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    rows=[(a,b,i) for i,(a,b) in enumerate(x['requests']) if a<b]\n    rows.sort(key=lambda r:(r[0],r[1]))\n    fetches=[]\n    assignments={}\n    for a,b,i in rows:\n        merge=bool(fetches) and a<=fetches[-1][1]+x['gap']\n        if merge and any(p in x['forbidden'] for p in range(fetches[-1][1],a)): merge=False\n        if merge:\n            index=len(fetches)-1\n            fetches[index][1]=max(fetches[index][1],b)\n        else:\n            index=len(fetches)\n            fetches.append([a,b])\n        assignments[i]=index\n    mapping=[]\n    for i,(a,b) in enumerate(x['requests']):\n        if a==b: mapping.append(None); continue\n        index=assignments[i]\n        mapping.append([index,a-fetches[index][0],b-a])\n    return [fetches,mapping]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('assignment-index fixture 0', json.loads(json.dumps(solve({'requests':[[4,6],[0,2]],'gap':2,'forbidden':[]}))), json.loads(json.dumps([[[0,6]],[[0,4,2],[0,0,2]]])))\ncheck('assignment-index fixture 1', json.loads(json.dumps(solve({'requests':[[0,2],[4,6]],'gap':2,'forbidden':[3]}))), json.loads(json.dumps([[[0,2],[4,6]],[[0,0,2],[1,0,2]]])))\ncheck('assignment-index fixture 2', json.loads(json.dumps(solve({'requests':[[0,5],[2,3]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,5]],[[0,0,5],[0,2,1]]])))\ncheck('assignment-index fixture 3', json.loads(json.dumps(solve({'requests':[[0,2],[2,4]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,4]],[[0,0,2],[0,2,2]]])))\ncheck('assignment-index fixture 4', json.loads(json.dumps(solve({'requests':[[0,0],[3,3]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[],[None,None]])))\ncheck('assignment-index fixture 5', json.loads(json.dumps(solve({'requests':[[2,4],[8,9]],'gap':1,'forbidden':[]}))), json.loads(json.dumps([[[2,4],[8,9]],[[0,0,2],[1,0,1]]])))\ncheck('assignment-index fixture 6', json.loads(json.dumps(solve({'requests':[[0,N],[N,2*N]],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[[0,2*N]],[[0,0,N],[0,N,N]]])))\ncheck('assignment-index fixture 7', json.loads(json.dumps(solve({'requests':[],'gap':0,'forbidden':[]}))), json.loads(json.dumps([[],[]])))\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"Deterministic simplified range service, with stipulated local policies and already parsed trusted inputs; not a complete HTTP implementation. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"s3-http_ranges-coalesced-origin-fetch-assignment-index","generated_at":"2026-09-29T14:41:21.799066+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Range responses combine representation identity, conditional requests, framing, and partial-object state.","repair":"Apply the bounded decision exactly: rows=[(a,b,i) for i,(a,b) in enumerate(x['requests']) if a<b]\nrows.sort(key=lambda r:(r[0],r[1]))\nfetches=[]\nassignments={}\nfor a,b,i in rows:\n    merge=bool(fetches) and a<=fetches[-1][1]+x['gap']\n    if merge and any(p in x['forbidden'] for p in range(fetches[-1][1],a)): merge=False\n    if merge:\n        index=len(fetches)-1\n        fetches[index][1]=max(fetches[index][1],b)\n    else:\n        index=len(fetches)\n        fetches.append([a,b])\n    assignments[i]=index\nmapping=[]\nfor i,(a,b) in enumerate(x['requests']):\n    if a==b: mapping.append(None); continue\n    index=assignments[i]\n    mapping.append([index,a-fetches[index][0],b-a])\nreturn [fetches,mapping]","root_cause":"The coalesced-origin-fetch-assignment-index decision uses rows=[(a,b,i) for i,(a,b) in enumerate(x['requests']) if a<b]\nrows.sort(key=lambda r:(r[0],r[1]))\nfetches=[]\nassignments={}\nfor a,b,i in rows:\n    merge=bool(fetches) and a<=fetches[-1][1]+x['gap']\n    if merge and any(p in x['forbidden'] for p in range(fetches[-1][1],a)): merge=False\n    if merge:\n        index=len(fetches)-1\n        fetches[index][1]=max(fetches[index][1],b)\n    else:\n        index=max(0,len(fetches)-1)\n        fetches.append([a,b])\n    assignments[i]=index\nmapping=[]\nfor i,(a,b) in enumerate(x['requests']):\n    if a==b: mapping.append(None); continue\n    index=assignments[i]\n    mapping.append([index,a-fetches[index][0],b-a])\nreturn [fetches,mapping].","sha256":"b6100083f43f6ed56a91504ca9cc3c0ed337b190dcac2b45fae2869bf0dd8870","title":"A proxy coalesces nearby requested spans into economical origin reads: new fetches map to their newly allocated index · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":38.465,"exit_code":1,"observations":[{"actual":[[[0,6]],[[0,4,2],[0,0,2]]],"check":"assignment-index fixture 0","expected":[[[0,6]],[[0,4,2],[0,0,2]]],"passed":true},{"actual":[[[0,2],[4,6]],[[0,0,2],[0,4,2]]],"check":"assignment-index fixture 1","expected":[[[0,2],[4,6]],[[0,0,2],[1,0,2]]],"passed":false},{"actual":[[[0,5]],[[0,0,5],[0,2,1]]],"check":"assignment-index fixture 2","expected":[[[0,5]],[[0,0,5],[0,2,1]]],"passed":true},{"actual":[[[0,4]],[[0,0,2],[0,2,2]]],"check":"assignment-index fixture 3","expected":[[[0,4]],[[0,0,2],[0,2,2]]],"passed":true},{"actual":[[],[null,null]],"check":"assignment-index fixture 4","expected":[[],[null,null]],"passed":true},{"actual":[[[2,4],[8,9]],[[0,0,2],[0,6,1]]],"check":"assignment-index fixture 5","expected":[[[2,4],[8,9]],[[0,0,2],[1,0,1]]],"passed":false},{"actual":[[[0,2]],[[0,0,1],[0,1,1]]],"check":"assignment-index fixture 6","expected":[[[0,2]],[[0,0,1],[0,1,1]]],"passed":true},{"actual":[[],[]],"check":"assignment-index fixture 7","expected":[[],[]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"assignment-index fixture 0\", \"actual\": [[[0, 6]], [[0, 4, 2], [0, 0, 2]]], \"expected\": [[[0, 6]], [[0, 4, 2], [0, 0, 2]]], \"passed\": true}, {\"check\": \"assignment-index fixture 1\", \"actual\": [[[0, 2], [4, 6]], [[0, 0, 2], [0, 4, 2]]], \"expected\": [[[0, 2], [4, 6]], [[0, 0, 2], [1, 0, 2]]], \"passed\": false}, {\"check\": \"assignment-index fixture 2\", \"actual\": [[[0, 5]], [[0, 0, 5], [0, 2, 1]]], \"expected\": [[[0, 5]], [[0, 0, 5], [0, 2, 1]]], \"passed\": true}, {\"check\": \"assignment-index fixture 3\", \"actual\": [[[0, 4]], [[0, 0, 2], [0, 2, 2]]], \"expected\": [[[0, 4]], [[0, 0, 2], [0, 2, 2]]], \"passed\": true}, {\"check\": \"assignment-index fixture 4\", \"actual\": [[], [null, null]], \"expected\": [[], [null, null]], \"passed\": true}, {\"check\": \"assignment-index fixture 5\", \"actual\": [[[2, 4], [8, 9]], [[0, 0, 2], [0, 6, 1]]], \"expected\": [[[2, 4], [8, 9]], [[0, 0, 2], [1, 0, 1]]], \"passed\": false}, {\"check\": \"assignment-index fixture 6\", \"actual\": [[[0, 2]], [[0, 0, 1], [0, 1, 1]]], \"expected\": [[[0, 2]], [[0, 0, 1], [0, 1, 1]]], \"passed\": true}, {\"check\": \"assignment-index fixture 7\", \"actual\": [[], []], \"expected\": [[], []], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":44.586,"exit_code":1,"observations":[{"actual":[[[0,6]],[[0,4,2],[0,0,2]]],"check":"assignment-index fixture 0","expected":[[[0,6]],[[0,4,2],[0,0,2]]],"passed":true},{"actual":[[[0,2],[4,6]],[[0,0,2],[0,4,2]]],"check":"assignment-index fixture 1","expected":[[[0,2],[4,6]],[[0,0,2],[1,0,2]]],"passed":false},{"actual":[[[0,5]],[[0,0,5],[0,2,1]]],"check":"assignment-index fixture 2","expected":[[[0,5]],[[0,0,5],[0,2,1]]],"passed":true},{"actual":[[[0,4]],[[0,0,2],[0,2,2]]],"check":"assignment-index fixture 3","expected":[[[0,4]],[[0,0,2],[0,2,2]]],"passed":true},{"actual":[[],[null,null]],"check":"assignment-index fixture 4","expected":[[],[null,null]],"passed":true},{"actual":[[[2,4],[8,9]],[[0,0,2],[0,6,1]]],"check":"assignment-index fixture 5","expected":[[[2,4],[8,9]],[[0,0,2],[1,0,1]]],"passed":false},{"actual":[[[0,2]],[[0,0,1],[0,1,1]]],"check":"assignment-index fixture 6","expected":[[[0,2]],[[0,0,1],[0,1,1]]],"passed":true},{"actual":[[],[]],"check":"assignment-index fixture 7","expected":[[],[]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"assignment-index fixture 0\", \"actual\": [[[0, 6]], [[0, 4, 2], [0, 0, 2]]], \"expected\": [[[0, 6]], [[0, 4, 2], [0, 0, 2]]], \"passed\": true}, {\"check\": \"assignment-index fixture 1\", \"actual\": [[[0, 2], [4, 6]], [[0, 0, 2], [0, 4, 2]]], \"expected\": [[[0, 2], [4, 6]], [[0, 0, 2], [1, 0, 2]]], \"passed\": false}, {\"check\": \"assignment-index fixture 2\", \"actual\": [[[0, 5]], [[0, 0, 5], [0, 2, 1]]], \"expected\": [[[0, 5]], [[0, 0, 5], [0, 2, 1]]], \"passed\": true}, {\"check\": \"assignment-index fixture 3\", \"actual\": [[[0, 4]], [[0, 0, 2], [0, 2, 2]]], \"expected\": [[[0, 4]], [[0, 0, 2], [0, 2, 2]]], \"passed\": true}, {\"check\": \"assignment-index fixture 4\", \"actual\": [[], [null, null]], \"expected\": [[], [null, null]], \"passed\": true}, {\"check\": \"assignment-index fixture 5\", \"actual\": [[[2, 4], [8, 9]], [[0, 0, 2], [0, 6, 1]]], \"expected\": [[[2, 4], [8, 9]], [[0, 0, 2], [1, 0, 1]]], \"passed\": false}, {\"check\": \"assignment-index fixture 6\", \"actual\": [[[0, 2]], [[0, 0, 1], [0, 1, 1]]], \"expected\": [[[0, 2]], [[0, 0, 1], [0, 1, 1]]], \"passed\": true}, {\"check\": \"assignment-index fixture 7\", \"actual\": [[], []], \"expected\": [[], []], \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":40.323,"exit_code":0,"observations":[{"actual":[[[0,6]],[[0,4,2],[0,0,2]]],"check":"assignment-index fixture 0","expected":[[[0,6]],[[0,4,2],[0,0,2]]],"passed":true},{"actual":[[[0,2],[4,6]],[[0,0,2],[1,0,2]]],"check":"assignment-index fixture 1","expected":[[[0,2],[4,6]],[[0,0,2],[1,0,2]]],"passed":true},{"actual":[[[0,5]],[[0,0,5],[0,2,1]]],"check":"assignment-index fixture 2","expected":[[[0,5]],[[0,0,5],[0,2,1]]],"passed":true},{"actual":[[[0,4]],[[0,0,2],[0,2,2]]],"check":"assignment-index fixture 3","expected":[[[0,4]],[[0,0,2],[0,2,2]]],"passed":true},{"actual":[[],[null,null]],"check":"assignment-index fixture 4","expected":[[],[null,null]],"passed":true},{"actual":[[[2,4],[8,9]],[[0,0,2],[1,0,1]]],"check":"assignment-index fixture 5","expected":[[[2,4],[8,9]],[[0,0,2],[1,0,1]]],"passed":true},{"actual":[[[0,2]],[[0,0,1],[0,1,1]]],"check":"assignment-index fixture 6","expected":[[[0,2]],[[0,0,1],[0,1,1]]],"passed":true},{"actual":[[],[]],"check":"assignment-index fixture 7","expected":[[],[]],"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"assignment-index fixture 0\", \"actual\": [[[0, 6]], [[0, 4, 2], [0, 0, 2]]], \"expected\": [[[0, 6]], [[0, 4, 2], [0, 0, 2]]], \"passed\": true}, {\"check\": \"assignment-index fixture 1\", \"actual\": [[[0, 2], [4, 6]], [[0, 0, 2], [1, 0, 2]]], \"expected\": [[[0, 2], [4, 6]], [[0, 0, 2], [1, 0, 2]]], \"passed\": true}, {\"check\": \"assignment-index fixture 2\", \"actual\": [[[0, 5]], [[0, 0, 5], [0, 2, 1]]], \"expected\": [[[0, 5]], [[0, 0, 5], [0, 2, 1]]], \"passed\": true}, {\"check\": \"assignment-index fixture 3\", \"actual\": [[[0, 4]], [[0, 0, 2], [0, 2, 2]]], \"expected\": [[[0, 4]], [[0, 0, 2], [0, 2, 2]]], \"passed\": true}, {\"check\": \"assignment-index fixture 4\", \"actual\": [[], [null, null]], \"expected\": [[], [null, null]], \"passed\": true}, {\"check\": \"assignment-index fixture 5\", \"actual\": [[[2, 4], [8, 9]], [[0, 0, 2], [1, 0, 1]]], \"expected\": [[[2, 4], [8, 9]], [[0, 0, 2], [1, 0, 1]]], \"passed\": true}, {\"check\": \"assignment-index fixture 6\", \"actual\": [[[0, 2]], [[0, 0, 1], [0, 1, 1]]], \"expected\": [[[0, 2]], [[0, 0, 1], [0, 1, 1]]], \"passed\": true}, {\"check\": \"assignment-index fixture 7\", \"actual\": [[], []], \"expected\": [[], []], \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}