メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.419113797032 43.8029746607175, 142.420130182861 43.8036168741277, 142.419694820337 43.8040193642263, 142.419311491204 43.8043468850183, 142.41907403526 43.8045497409063, 142.419000137011 43.8045039300506, 142.418298074323 43.8041236125596, 142.417944454688 43.8039546397279, 142.417450242448 43.8037196302226, 142.416786776186 43.8034424764108, 142.41738203926 43.8029169831881, 142.418102435778 43.8023244821267, 142.419113797032 43.8029746607175)) ^^http://www.opengis.net/ont/geosparql#wktLiteral