メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.264264734253 44.0275097511695, 144.264237436074 44.0275554960729, 144.262781472622 44.0270555109395, 144.262787234023 44.02704728352, 144.263176346457 44.0264854711939, 144.263807344737 44.0267121652805, 144.263966667021 44.0267661206428, 144.264591695993 44.0269777928846, 144.264264734253 44.0275097511695)) ^^http://www.opengis.net/ont/geosparql#wktLiteral