メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.404989634746 43.036908479359, 141.405227598107 43.0372581602712, 141.404694649291 43.037458539448, 141.404050120882 43.037720052317, 141.403804398236 43.0373632781697, 141.403749130105 43.0372826222009, 141.403554370587 43.0369920535513, 141.40327407992 43.0368976376928, 141.40350548512 43.0365377086145, 141.40395052606 43.036364255209, 141.40446331202 43.0361654194058, 141.404965222771 43.0368848787964, 141.404989634746 43.036908479359)) ^^http://www.opengis.net/ont/geosparql#wktLiteral