メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.970950762441 34.8566641762254, 136.971595276891 34.8573962114308, 136.972478177094 34.8583642114596, 136.971439024517 34.8589059681216, 136.97015452966 34.8596524047306, 136.969169993676 34.8584495473091, 136.970086019454 34.8578670439314, 136.970421629613 34.8577660311266, 136.969160254129 34.8562718468016, 136.969113390283 34.8562182433702, 136.968114314993 34.8550754990626, 136.969082100822 34.854522175311, 136.969936232974 34.8555118435399, 136.970950762441 34.8566641762254)) ^^http://www.opengis.net/ont/geosparql#wktLiteral