メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.42370294856 43.0606140790707, 141.424633022321 43.0608283974335, 141.424469939854 43.0612602467063, 141.424115110936 43.0625804620472, 141.42325350331 43.0627160338844, 141.423260643018 43.0627057462895, 141.422560102404 43.0621749004695, 141.422058149813 43.0617700402592, 141.421779818026 43.0615549277134, 141.4210955587 43.0610345284083, 141.420608787147 43.0606357477741, 141.420912016311 43.0604755512529, 141.421798134709 43.0600205944083, 141.422575631156 43.0596181549565, 141.4229754865 43.0599610892468, 141.42370294856 43.0606140790707)) ^^http://www.opengis.net/ont/geosparql#wktLiteral