メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.330697358786 43.0361549569972, 141.330905826162 43.0359983892223, 141.331779290698 43.0364778766044, 141.331659394613 43.0365712975883, 141.331631352294 43.036593718579, 141.331600495866 43.0366183675377, 141.33110245038 43.0370018878445, 141.330730296784 43.0372947771904, 141.330527383857 43.0375027297519, 141.329625466112 43.037060067974, 141.32854438473 43.0365201678674, 141.329345317339 43.0361362833478, 141.329122192969 43.0359197006845, 141.329485410921 43.0357243617088, 141.329643392108 43.0356230908697, 141.330697358786 43.0361549569972)) ^^http://www.opengis.net/ont/geosparql#wktLiteral