メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.638201657118 34.9951698218744, 136.638890542246 34.9959880473724, 136.637988706051 34.996568072878, 136.637761234966 34.9967463108176, 136.636405155629 34.9975502578678, 136.635671405337 34.9967666912151, 136.635660751586 34.996755760393, 136.634873808017 34.9959533120731, 136.636187204838 34.9950708712372, 136.636704003452 34.994756191038, 136.637489022449 34.9942377087204, 136.638006986681 34.9948758391894, 136.638201657118 34.9951698218744)) ^^http://www.opengis.net/ont/geosparql#wktLiteral