gistfile1.txt

{
  "size": 10,
  "from": 0,
  "highlight": {
    "fields": {
      "Content": {}
    },
    "pre_tags": [
      "AT"
    ],
    "post_tags": [
      "ET"
    ]
  },
  "query": {
    "custom_score": {
      "query": {
        "query_string": {
          "query": "oil",
          "default_field": "Content"
        }
      },
      "script": "_score"
    }
  }
}