Multi word query in elasticsearch with filter?

{
  "query": {
    "bool": {
      "must": [
        {
          "match": {
            "Category": "Sport"
          }
        },
        {
          "multi_match": {
            "query": "world series",
            "type": "cross_fields",
            "operator": "and",
            "fields": [
              "Question",
              "Answer"
            ]
          }
        }
      ],
      "must_not": [],
      "should": []
    }
  },
  "from": 0,
  "size": 10,
  "sort": [],
  "aggs": {}
}