メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.846528818549 43.0374536911951, 144.846451179532 43.0374949761814, 144.846116430078 43.0376729025454, 144.845767796203 43.0378580356138, 144.844580367633 43.0367847592744, 144.844627517634 43.0367570366426, 144.844973280792 43.0365538985962, 144.84514672308 43.0364519991765, 144.845837106794 43.0370236781108, 144.845895638659 43.036993094217, 144.846009699647 43.036933471694, 144.846528818549 43.0374536911951)) ^^http://www.opengis.net/ont/geosparql#wktLiteral