メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.848390033272 35.4123550320952, 136.849368098425 35.4124373985461, 136.849173027462 35.4139418150919, 136.848967286308 35.4155718703221, 136.848202945215 35.4154746809537, 136.847937294275 35.4154613031161, 136.847037457886 35.415378219974, 136.847015787614 35.4153762266591, 136.847235063705 35.4137700808581, 136.847426397704 35.4122562887224, 136.848390033272 35.4123550320952)) ^^http://www.opengis.net/ont/geosparql#wktLiteral