メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.353578838109 43.1110448848061, 141.353647963955 43.1110569566431, 141.354001329466 43.111106965199, 141.354488066188 43.1111868428585, 141.354170605086 43.1124482372925, 141.3536962643 43.1123799883054, 141.353265946444 43.1123143297606, 141.352749139058 43.1122422993966, 141.353044917923 43.1109623151108, 141.353578838109 43.1110448848061)) ^^http://www.opengis.net/ont/geosparql#wktLiteral