メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.134966829921 42.9873928222345, 144.134472352352 42.9876004920916, 144.133860794955 42.9877261843682, 144.133403120459 42.9877337192277, 144.132973974912 42.9877407820513, 144.132659668948 42.9877565034215, 144.132190193074 42.9878482697467, 144.129261443786 42.986475198231, 144.129776646221 42.9859036106709, 144.130433486626 42.9851456430725, 144.134966829921 42.9873928222345)) ^^http://www.opengis.net/ont/geosparql#wktLiteral