{
    "event": "Game with long & short comments and variations 3.",
    "mainVariation": [
        {
            "notation": "e4",
            "comment": "I'm a long comment with an empty sub-variation sibling.",
            "isLongComment": true,
            "variations": [
                []
            ]
        },
        "e5",
        {
            "notation": "Nf3",
            "variations": [
                {
                    "isLongVariation": true,
                    "comment": "I'm a long variation followed by an empty variation.",
                    "nodes": [ "Nc3" ]
                },
                []
            ]
        },
        "Nc6"
    ]
}