メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.172049905321 33.9637157539738, 131.172920957016 33.9638018229516, 131.173507961392 33.9638592441612, 131.174183343341 33.9639277998377, 131.174244660105 33.9640780405908, 131.174315127145 33.9646925257452, 131.174347285246 33.9649734007701, 131.174355528731 33.9650133340365, 131.174458750648 33.9658939075194, 131.173560002681 33.9661681241591, 131.172774432015 33.9663777418828, 131.172182418114 33.9665451027187, 131.172077435433 33.9665731320382, 131.171658843843 33.9651029918967, 131.171612376097 33.9649337107169, 131.171260760566 33.9636514699519, 131.172049905321 33.9637157539738)) ^^http://www.opengis.net/ont/geosparql#wktLiteral