メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.339580492145 44.4807809852007, 142.336694966679 44.4800656913659, 142.336711021694 44.4800177612337, 142.336748373103 44.4799062171341, 142.33686909601 44.479318099209, 142.336868567947 44.4792926474865, 142.339907778335 44.4799461887874, 142.339972874986 44.4799636105195, 142.339605028104 44.4807298494744, 142.339580492145 44.4807809852007)) ^^http://www.opengis.net/ont/geosparql#wktLiteral