メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.350089249796 43.1069756502557, 141.350113444439 43.1069817468188, 141.350621666523 43.1070410038685, 141.35039340284 43.1080053800592, 141.349857195434 43.107923189043, 141.349273639257 43.1078495568874, 141.349283041942 43.1077647444707, 141.34948665992 43.106917620738, 141.350089249796 43.1069756502557)) ^^http://www.opengis.net/ont/geosparql#wktLiteral