simpleBox.jsonld

{
  "@context": "https://schema.org/",
  "@type": "Dataset",
  "name": "DS1",
  "url": "http://www.foo.com/1",
 "spatialCoverage": {
        "@type": "Place",
        "geo": {
            "@type": "GeoShape",
            "box": "26 -175 62 -42",
            "polygon": "26,-175 62,-175 62,-42 26,-42 26,-175"
        },
        "additionalProperty": [
            {
                "@type": "PropertyValue",
                "additionalType": "http:\/\/www.wikidata.org\/entity\/Q161779",
                "propertyID": "SRS",
                "name": "Spatial Reference System",
                "value": "http:\/\/www.opengis.net\/def\/crs\/OGC\/1.3\/CRS84"
            },
            {
                "@type": "PropertyValue",
                "additionalType": "http:\/\/www.wikidata.org\/entity\/Q4018860",
                "propertyID": "WKT",
                "name": "Well-Known Text",
                "value": "POLYGON ((-175 26, -42 26, -42 62, -175 62, -175 26))"
            }
        ]
    }
}