メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.9646674098 43.5472907098733, 144.965037433917 43.5475304564337, 144.964294660773 43.548143598882, 144.963917801576 43.5478894553731, 144.963649364666 43.547711668329, 144.963477643805 43.5475906158832, 144.964216732475 43.5469901178113, 144.9646674098 43.5472907098733)) ^^http://www.opengis.net/ont/geosparql#wktLiteral