メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.134295691825 34.6623374979298, 135.134480145419 34.6624553418997, 135.134686068272 34.6625959708456, 135.134272725921 34.6630088661757, 135.134061526441 34.6628843167979, 135.133422342381 34.6625073710576, 135.133452148704 34.6624868917781, 135.133851660303 34.6620538066078, 135.134295691825 34.6623374979298)) ^^http://www.opengis.net/ont/geosparql#wktLiteral