メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.38784249164 43.0629095329828, 141.388933690206 43.0633101872899, 141.388337260751 43.0642847580957, 141.388067363708 43.0647632181208, 141.38691900337 43.0644087529027, 141.386401900356 43.0642520252711, 141.385795610763 43.064101022464, 141.385915187073 43.0636180573375, 141.385960043857 43.0634768220621, 141.386091699405 43.0632470644315, 141.386320329681 43.0629007992483, 141.386598446762 43.0624520837506, 141.387748906907 43.0628732404574, 141.38784249164 43.0629095329828)) ^^http://www.opengis.net/ont/geosparql#wktLiteral