メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.605095807944 37.8506378030858, 140.604267008353 37.8509029711016, 140.602166390574 37.8515866777019, 140.601556854332 37.8496626904913, 140.601035767367 37.8480470145965, 140.602534125947 37.8477102075431, 140.603035829223 37.8476040187807, 140.603196320662 37.8480470206975, 140.603373456845 37.8484258530932, 140.603658642945 37.8489252000822, 140.604493241066 37.8503435484271, 140.604884443956 37.8502127339163, 140.605095807944 37.8506378030858)) ^^http://www.opengis.net/ont/geosparql#wktLiteral