メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.871989803726 34.0064303323307, 131.872408315736 34.0066513932873, 131.873114838361 34.0070513507574, 131.872228444079 34.0082341495607, 131.87221053909 34.0082580561742, 131.871474889895 34.0078657668309, 131.871073870405 34.0076489719264, 131.870695790434 34.0074446276183, 131.871129687944 34.0068637101039, 131.871610071707 34.0062106321337, 131.871989803726 34.0064303323307)) ^^http://www.opengis.net/ont/geosparql#wktLiteral