メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.42396216323 44.2942936075337, 142.424795724678 44.2949976329551, 142.426049390836 44.2960564143871, 142.423680415877 44.2960668534767, 142.422449810641 44.2960722549351, 142.421819751117 44.2960749999554, 142.421708439366 44.2959406011251, 142.421460635302 44.2956131098435, 142.421129533986 44.2953325218052, 142.41992474878 44.2942996869032, 142.419597452266 44.2940134435497, 142.421983977969 44.2925686264586, 142.42396216323 44.2942936075337)) ^^http://www.opengis.net/ont/geosparql#wktLiteral