メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.373703491 43.0476695646776, 141.372825633687 43.0482120495701, 141.37263282389 43.0480481093394, 141.372362069313 43.0478024105726, 141.372431175982 43.0477642594464, 141.372877955424 43.0475007098033, 141.373239912372 43.0472675251815, 141.373644288854 43.0470114544938, 141.373712073686 43.0470661975349, 141.374106532596 43.0474129897372, 141.373703491 43.0476695646776)) ^^http://www.opengis.net/ont/geosparql#wktLiteral