POST /enwiki_rank/_rank_eval
{
  "requests": [
    {
      "id": "JFK_query",
      "request": {
        "query": {
          "multi_match": {
            "query": "JFK",
            "type": "best_fields",
            "fields": [
              "title",
              "opening_text",
              "redirect.title.near_match"
            ]
          }
        }
      },
      "summary_fields": [
        "title"
      ],
      "ratings": [
        {
          "_id": "3054546",
          "rating": 1,
          "_index": "enwiki_rank"
        },
        {
          "_id": "5119376",
          "rating": 3,
          "_index": "enwiki_rank"
        },
        {
          "_id": "7957",
          "rating": 1,
          "_index": "enwiki_rank"
        },
        {
          "_id": "23450997",
          "rating": 1,
          "_index": "enwiki_rank"
        },
        {
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          "rating": 0,
          "_index": "enwiki_rank"
        },
        {
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          "rating": 1,
          "_index": "enwiki_rank"
        },
        {
          "_id": "1193731",
          "rating": 1,
          "_index": "enwiki_rank"
        },
        {
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          "rating": 2,
          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
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          "_index": "enwiki_rank"
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
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          "_index": "enwiki_rank"
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        {
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        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
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        {
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        {
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        {
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          "_index": "enwiki_rank"
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        {
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        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
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        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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          "_index": "enwiki_rank"
        },
        {
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        },
        {
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          "_index": "enwiki_rank"
        }
      ]
    }
  ],
  "metric": {
    "precision": {
      "relevant_rating_threshold": 2,
      "k": 5 
    }
  }
}