{
    "filter": {
        "fields": [
            {
                "fields": [
                    {
                        "dimensions": [
                            "A",
                            "B"
                        ],
                        "type": "columnComparison"
                    },
                    {
                        "fields": [
                            {
                                "dimensions": [
                                    "C",
                                    "D"
                                ],
                                "type": "columnComparison"
                            },
                            {
                                "fields": [
                                    {
                                        "field": {
                                            "dimension": "F",
                                            "type": "selector",
                                            "value": null
                                        },
                                        "type": "not"
                                    },
                                    {
                                        "dimension": "F",
                                        "lower": 2,
                                        "ordering": "numeric",
                                        "type": "bound"
                                    }
                                ],
                                "type": "and"
                            }
                        ],
                        "type": "and"
                    }
                ],
                "type": "or"
            },
            {
                "field": {
                    "dimension": "C",
                    "type": "in",
                    "values": [
                        3,
                        4,
                        5
                    ]
                },
                "type": "not"
            }
        ],
        "type": "and"
    }
}