メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.181839483377 34.6819715343817, 135.180772834473 34.6825153456938, 135.180383009848 34.6820109771039, 135.180136953269 34.6816926640481, 135.181274271357 34.6811235752694, 135.18143767594 34.6810953924167, 135.181902828588 34.6814955624349, 135.182161794757 34.6817416635425, 135.182165327749 34.6817456640091, 135.181839483377 34.6819715343817)) ^^http://www.opengis.net/ont/geosparql#wktLiteral