メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.46430327088 40.6288046612436, 140.462478193087 40.6289586261125, 140.460665318504 40.6290964178403, 140.460593984796 40.6286177510664, 140.460464209731 40.6276803706837, 140.460359087714 40.6269628677693, 140.460281303905 40.6263201727573, 140.462086789302 40.6261826441197, 140.46389902092 40.6260382839957, 140.464134656358 40.6276830331135, 140.46430327088 40.6288046612436)) ^^http://www.opengis.net/ont/geosparql#wktLiteral