メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.901467008327 43.4646935351349, 141.901497982074 43.4647969706254, 141.901250670297 43.4648386610545, 141.901131196478 43.4644656162199, 141.901004229667 43.4640152274819, 141.900715923032 43.4630239763834, 141.900955961332 43.4629870115044, 141.901467008327 43.4646935351349)) ^^http://www.opengis.net/ont/geosparql#wktLiteral