{
  "@context": "http://korap.ids-mannheim.de/ns/KoralQuery/v0.3/context.jsonld",
  "collection": {
    "@type": "koral:docGroup",
    "operands": [
      {
        "@type": "koral:doc",
        "key": "availability",
        "match": "match:eq",
        "type": "type:regex",
        "value": "CC-BY.*"
      },
      {
        "@type": "koral:docGroup",
        "operands": [
          {
            "@type": "koral:doc",
            "key": "corpusSigle",
            "match": "match:ne",
            "value": "WUD17",
            "type": "type:string"
          },
          {
            "@type": "koral:doc",
            "key": "corpusSigle",
            "match": "match:ne",
            "value": "WDD17",
            "type": "type:string"
          }
        ],
        "operation": "operation:and"
      }
    ],
    "operation": "operation:and"
  }
}
