メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.340195036792 43.0628934995367, 141.339887364139 43.0640905897013, 141.339332083081 43.0640195660839, 141.339103475977 43.063989261036, 141.339043453596 43.0639812578569, 141.338748208668 43.0639428250591, 141.338341165645 43.0638884511029, 141.338419299663 43.0635805384515, 141.338485824425 43.0633181075214, 141.338500766325 43.0632677299038, 141.338635147148 43.0626787371073, 141.340195036792 43.0628934995367)) ^^http://www.opengis.net/ont/geosparql#wktLiteral