メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.744934137084 35.4119016174947, 136.744819369155 35.4121372327445, 136.744702421344 35.4123784036034, 136.743447436513 35.4119322679114, 136.743573155821 35.4117001789777, 136.74368303312 35.411454617256, 136.743854756175 35.4115139494792, 136.744934137084 35.4119016174947)) ^^http://www.opengis.net/ont/geosparql#wktLiteral