メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.659457515782 33.2449963479867, 131.659427730574 33.2450991477489, 131.659329003352 33.2456771487671, 131.659228617224 33.2462744431321, 131.65913339562 33.2468397456205, 131.659053497589 33.2472855216513, 131.658946213972 33.2478747694792, 131.657297834577 33.2476667556176, 131.657405275553 33.2470747779279, 131.65749781899 33.2466259394925, 131.657592526389 33.2460637213916, 131.65770570021 33.2454651256877, 131.657777856029 33.2450705873517, 131.657837339519 33.2447299226008, 131.659457515782 33.2449963479867)) ^^http://www.opengis.net/ont/geosparql#wktLiteral