メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.133740936659 42.9766532384803, 144.132815950478 42.9776593254773, 144.131893919651 42.9765962128568, 144.131556214126 42.9762008217812, 144.131114702348 42.975730407908, 144.130926726648 42.9755335536299, 144.131337492941 42.9750333035963, 144.132088110041 42.9741074585359, 144.132574546405 42.9743679013726, 144.133002536604 42.9745583422988, 144.134651674286 42.9753007967826, 144.13487566855 42.9754221509504, 144.133740936659 42.9766532384803)) ^^http://www.opengis.net/ont/geosparql#wktLiteral