メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.611440698008 34.3404790540756, 135.611032387699 34.3404253560097, 135.610640841083 34.3403732595763, 135.610512828957 34.3403466518169, 135.610290134853 34.3403121355426, 135.610606842142 34.3388791067142, 135.611251340778 34.3390497723076, 135.611729851645 34.3391807475677, 135.611440698008 34.3404790540756)) ^^http://www.opengis.net/ont/geosparql#wktLiteral