メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.635778348346 34.7967902315694, 134.63575356217 34.7978615165564, 134.634333995835 34.7978650535568, 134.632981654524 34.7978778371804, 134.632978947812 34.7968014086937, 134.633024076626 34.795311163837, 134.63577639825 34.7952927770955, 134.635778348346 34.7967902315694)) ^^http://www.opengis.net/ont/geosparql#wktLiteral