メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.405971367635 43.795693010951, 142.406022782684 43.7956462656075, 142.406228901604 43.7957222847543, 142.407447227099 43.7963332511727, 142.407801836941 43.7965803501889, 142.408884422975 43.7970657338674, 142.408780876675 43.7971455853856, 142.408649090529 43.797243689651, 142.408465153532 43.7973946426311, 142.408429479493 43.7974239104828, 142.407408256807 43.7982531403034, 142.404956196991 43.7965655114001, 142.405178921472 43.7963716324477, 142.405583635021 43.7960317482399, 142.405809492799 43.7958401503035, 142.405971367635 43.795693010951)) ^^http://www.opengis.net/ont/geosparql#wktLiteral