メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.328363265636 43.1019623347711, 141.32831021542 43.1019029715832, 141.327780202673 43.101309766326, 141.327597460889 43.1011052544956, 141.328079704123 43.1009800938736, 141.328526671015 43.1008711743886, 141.329020625167 43.1007648823947, 141.329081285839 43.100751868323, 141.329661337183 43.1014330999431, 141.328363265636 43.1019623347711)) ^^http://www.opengis.net/ont/geosparql#wktLiteral