[
    {
        "name":"Unique Object - Attributes",
        "text": [
            "There is [exactly] one <N> <C> <D> [in the image].",
            "The image has [exactly] one <N> <C> <D>.",
            "No other <N> <C> <D> except for [exactly] one.",
            "There is a <N> <C> <D> [in the image].",
            "The image has a <N> <C> <D>.",
            "A <N> <C> <D> is present [in the image]."
        ],

        "constraints":[{"class":"unique_attr", "args":[]}],
        "type":"unique-obj",
        "label":"unique-obj",
        "references": [
            "There is [exactly] one {{<N> <C> <D>}} [in the image].",
            "The image has [exactly] one {{<N> <C> <D>}}.",
            "No other {{<N> <C> <D>}} except for [exactly] one.",
            "There is a {{<N> <C> <D>}} [in the image].",
            "The image has a {{<N> <C> <D>}}.",
            "A {{<N> <C> <D>}} is present [in the image]."
        ]
    }
    ]