メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.012411499511 43.5697696418748, 145.011960373869 43.5692991851208, 145.012008035716 43.5692586540574, 145.013091600959 43.5683799367851, 145.013057650352 43.568356568464, 145.012556735757 43.5680025355151, 145.012991869814 43.5676547620828, 145.014111345865 43.5684144009409, 145.013992293716 43.568505145951, 145.013734160802 43.5687097608264, 145.012411499511 43.5697696418748)) ^^http://www.opengis.net/ont/geosparql#wktLiteral