メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.889803470322 37.0547567926631, 140.888859348847 37.0546493288975, 140.888588708197 37.0546159760859, 140.887972733145 37.0545400085132, 140.887827296558 37.0545220839156, 140.88799360846 37.0538723084614, 140.88800519035 37.0538270101379, 140.888604386126 37.0538713782872, 140.889367293259 37.0539404040984, 140.889952854466 37.0539958692641, 140.889803470322 37.0547567926631)) ^^http://www.opengis.net/ont/geosparql#wktLiteral