メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.19710225473 34.6933579662141, 135.196163897516 34.6929747377451, 135.196050007586 34.6929282180789, 135.196570242968 34.6920523486104, 135.197600795558 34.6924957695462, 135.197328660524 34.6929664699628, 135.19710225473 34.6933579662141)) ^^http://www.opengis.net/ont/geosparql#wktLiteral