メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.606951650256 43.2956588163275, 144.606886443095 43.2957453233052, 144.606712644651 43.2959665584056, 144.604299027189 43.2949220660419, 144.604674270953 43.2944871202248, 144.606023553939 43.2950617065024, 144.60682749959 43.2954061027159, 144.606951650256 43.2956588163275)) ^^http://www.opengis.net/ont/geosparql#wktLiteral