メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.273862288963 42.4978764977425, 143.272661482162 42.4983615704531, 143.271891998448 42.4973876606488, 143.271253848409 42.496569003964, 143.270702869564 42.4958262364415, 143.271889546774 42.4953569224622, 143.272049980519 42.4955788809529, 143.272659928829 42.496381748712, 143.273282500462 42.497147361792, 143.273862288963 42.4978764977425)) ^^http://www.opengis.net/ont/geosparql#wktLiteral