メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.325105916622 43.09610552553, 141.325972788835 43.0971405261363, 141.325566931437 43.0973316310329, 141.325186821989 43.0975079617057, 141.324693869802 43.0977338741236, 141.324314640419 43.0973036293686, 141.324088606019 43.0970440453228, 141.323801442659 43.0967141998125, 141.323677588589 43.0965840728442, 141.322964431354 43.0957701485446, 141.323214954731 43.0956653520316, 141.323483440477 43.0955530344883, 141.323867076372 43.0953778622684, 141.324250243428 43.0952017010146, 141.324292909115 43.0951853083133, 141.325105916622 43.09610552553)) ^^http://www.opengis.net/ont/geosparql#wktLiteral