{
    "query": {
        "@type": "koral:group",
        "operation": "operation:relation",
        "operands": [
            {
                "@type": "koral:reference",
                "operation": "operation:focus",
                "classRef": [2],
                "operands": [{
                    "@type": "koral:group",
                    "operation": "operation:sequence",
                    "operands": [
                        {
                            "@type": "koral:reference",
                            "operation": "operation:focus",
                            "classRef": [1],
                            "operands": [{
                                "@type": "koral:group",
                                "operation": "operation:sequence",
                                "operands": [
                                    {
                                        "@type": "koral:reference",
                                        "operation": "operation:focus",
                                        "classRef": [2],
                                        "operands": [{
                                            "@type": "koral:group",
                                            "operation": "operation:sequence",
                                            "operands": [
                                                {
                                                    "@type": "koral:group",
                                                    "operation": "operation:class",
                                                    "classOut": 1,
                                                    "operands": [{
                                                        "@type": "koral:span",
                                                        "layer": "c",
                                                        "key": "VP",
                                                        "match": "match:eq"
                                                    }]
                                                },
                                                {
                                                    "@type": "koral:group",
                                                    "operation": "operation:class",
                                                    "classOut": 2,
                                                    "operands": [{
                                                        "@type": "koral:span",
                                                        "layer": "c",
                                                        "key": "NP",
                                                        "match": "match:eq"
                                                    }]
                                                }
                                            ],
                                            "inOrder": true
                                        }]
                                    },
                                    {
                                        "@type": "koral:group",
                                        "operation": "operation:class",
                                        "classOut": 3,
                                        "operands": [{
                                            "@type": "koral:span",
                                            "layer": "c",
                                            "key": "PP",
                                            "match": "match:eq"
                                        }]
                                    }
                                ],
                                "inOrder": true
                            }]
                        },
                        {
                            "@type": "koral:reference",
                            "operation": "operation:focus",
                            "classRef": [3]
                        }
                    ],
                    "inOrder": true
                }]
            },
            {
                "@type": "koral:reference",
                "operation": "operation:focus",
                "classRef": [1]
            }
        ],
        "relType": {
            "@type": "koral:relation",
            "wrap": {
                "@type": "koral:term",
                "foundry" : "mate",
                "layer": "d",
                "key" : "HEAD"
            }
        }
    },
    "meta": {}
}
