{
    "pools": [
        {
            "conditions": [
                {
                    "condition": "entity_properties",
                    "entity": "this",
                    "properties": {
                        "non_existent_property": 0
                    }
                }
            ],
            "rolls": 1,
            "entries": [
                {
                    "type": "item",
                    "name": "minecraft:stone"
                }
            ]
        }
    ]
}