メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.666812782482 34.5316993878074, 136.666922911221 34.5319030322526, 136.666846180509 34.5320300836552, 136.666204841045 34.5318800519035, 136.666061415276 34.5315878476232, 136.665978177156 34.5314958983446, 136.666630023169 34.5312663992181, 136.666812782482 34.5316993878074)) ^^http://www.opengis.net/ont/geosparql#wktLiteral