メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.353251269466 43.0986660848756, 141.353642971793 43.0987222470037, 141.354120292031 43.0987842821038, 141.354025058201 43.0992006501558, 141.353849208726 43.0999192192829, 141.353370354847 43.0998566093653, 141.352979795112 43.0998005964415, 141.352496335534 43.0997379466188, 141.35266319485 43.0990772584832, 141.352771513553 43.0985935477056, 141.353251269466 43.0986660848756)) ^^http://www.opengis.net/ont/geosparql#wktLiteral