メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.32525151238 43.7660852350113, 142.325772667321 43.766238576337, 142.326287512508 43.7663876132978, 142.326063102257 43.7667902133161, 142.325669251267 43.7674395064716, 142.325150410306 43.7672775304118, 142.324631151063 43.7671285444578, 142.323905754929 43.766893563348, 142.324507480416 43.7658534336474, 142.32525151238 43.7660852350113)) ^^http://www.opengis.net/ont/geosparql#wktLiteral