{
    "@context": {
        "@version": 1.1,
        "geom": "https://comp-rob2b.github.io/metamodels/geometry/structural-entities#",
        "geom-ext": "https://secorolab.github.io/metamodels/geometry/structural-entities#",

        "Line": {
            "@id": "geom-ext:Line",
            "@context": {
                "origin": { "@id": "geom:origin", "@type": "@id" },
                "direction": { "@id": "geom-ext:direction", "@type": "@id" }
            }
        },

        "Plane": {
            "@id": "geom-ext:Plane",
            "@context": {
                "origin": { "@id": "geom:origin", "@type": "@id" },
                "normal": { "@id": "geom-ext:normal", "@type": "@id" }
            }
        }
    }
}