メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.120268013134 43.539655208042, 142.120211771485 43.5400619681886, 142.117890194122 43.5398711212695, 142.1165780641 43.5397682083329, 142.116623482452 43.5394487430177, 142.116669060337 43.5390565629735, 142.117557848533 43.5391188013472, 142.117693728983 43.5383211307505, 142.120454477218 43.5385508059985, 142.120268013134 43.539655208042)) ^^http://www.opengis.net/ont/geosparql#wktLiteral