メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.458275118712 43.0357755311581, 144.458961350039 43.0355941234334, 144.459003456162 43.0356720762678, 144.459583750359 43.0369560054072, 144.458891455928 43.0371345093418, 144.45784081287 43.0373937025027, 144.457831790086 43.03730259254, 144.457812333888 43.0369688446524, 144.457800753461 43.0367690578842, 144.457684731097 43.0365814858899, 144.457473873935 43.0362410955266, 144.457186503955 43.0363118363123, 144.457082133385 43.0360908435287, 144.458275118712 43.0357755311581)) ^^http://www.opengis.net/ont/geosparql#wktLiteral