メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.90572787817 32.9742597298642, 131.905825519237 32.9745075576242, 131.906161114648 32.9752387177111, 131.905181173739 32.975585508671, 131.904505065732 32.9758200096231, 131.90398551797 32.9760153775607, 131.903520779186 32.9750268340148, 131.903151257101 32.9741954031749, 131.90364439758 32.9740340446091, 131.904988627662 32.97358759807, 131.905367860625 32.9734686093371, 131.90572787817 32.9742597298642)) ^^http://www.opengis.net/ont/geosparql#wktLiteral