メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.802461857584 34.9127342340661, 135.799983463661 34.9125988478272, 135.800010162072 34.9122586458735, 135.800078705107 34.9113845873824, 135.802061682233 34.9115314922305, 135.802230633143 34.9115462032929, 135.802790016417 34.9116483153976, 135.80261286759 34.9122273841418, 135.802602310717 34.9122628636693, 135.802461857584 34.9127342340661)) ^^http://www.opengis.net/ont/geosparql#wktLiteral