{
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          "question_id": "qst_0144::basic",
          "hit_at_10": false,
          "hit_at_1": false,
          "mrr": 0.0,
          "rank": null
        },
        {
          "question_id": "qst_0444::completeness",
          "hit_at_10": true,
          "hit_at_1": true,
          "mrr": 1.0,
          "rank": 1
        },
        {
          "question_id": "qst_0359::project_related",
          "hit_at_10": true,
          "hit_at_1": true,
          "mrr": 1.0,
          "rank": 1
        },
        {
          "question_id": "qst_0131::basic",
          "hit_at_10": false,
          "hit_at_1": false,
          "mrr": 0.0,
          "rank": null
        },
        {
          "question_id": "qst_0449::completeness",
          "hit_at_10": true,
          "hit_at_1": true,
          "mrr": 1.0,
          "rank": 1
        },
        {
          "question_id": "qst_0162::basic",
          "hit_at_10": true,
          "hit_at_1": true,
          "mrr": 1.0,
          "rank": 1
        },
        {
          "question_id": "qst_0034::basic",
          "hit_at_10": true,
          "hit_at_1": true,
          "mrr": 1.0,
          "rank": 1
        },
        {
          "question_id": "qst_0238::semantic",
          "hit_at_10": false,
          "hit_at_1": false,
          "mrr": 0.0,
          "rank": null
        },
        {
          "question_id": "qst_0057::metadata",
          "hit_at_10": false,
          "hit_at_1": false,
          "mrr": 0.0,
          "rank": null
        },
        {
          "question_id": "qst_0268::semantic",
          "hit_at_10": false,
          "hit_at_1": false,
          "mrr": 0.0,
          "rank": null
        },
        {
          "question_id": "qst_0261::semantic",
          "hit_at_10": false,
          "hit_at_1": false,
          "mrr": 0.0,
          "rank": null
        },
        {
          "question_id": "qst_0021::metadata",
          "hit_at_10": true,
          "hit_at_1": false,
          "mrr": 0.2,
          "rank": 5
        },
        {
          "question_id": "qst_0298::semantic",
          "hit_at_10": false,
          "hit_at_1": false,
          "mrr": 0.0,
          "rank": null
        },
        {
          "question_id": "qst_0313::intra_document_reasoning",
          "hit_at_10": true,
          "hit_at_1": true,
          "mrr": 1.0,
          "rank": 1
        },
        {
          "question_id": "qst_0244::semantic",
          "hit_at_10": true,
          "hit_at_1": false,
          "mrr": 0.3333333333333333,
          "rank": 3
        },
        {
          "question_id": "qst_0077::basic",
          "hit_at_10": true,
          "hit_at_1": false,
          "mrr": 0.1,
          "rank": 10
        },
        {
          "question_id": "qst_0424::conflicting_info",
          "hit_at_10": false,
          "hit_at_1": false,
          "mrr": 0.0,
          "rank": null
        },
        {
          "question_id": "qst_0401::constrained",
          "hit_at_10": true,
          "hit_at_1": true,
          "mrr": 1.0,
          "rank": 1
        },
        {
          "question_id": "qst_0053::metadata",
          "hit_at_10": true,
          "hit_at_1": false,
          "mrr": 0.5,
          "rank": 2
        }
      ]
    }
  ],
  "interpretation_note": "If exact Hit@10 still declines with N similarly to HNSW, drift is not solely an ANN artifact. If exact stays flat while HNSW drops, HNSW parameters dominate."
}