メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.874713066844 38.8036660194992, 139.874610925464 38.803576080211, 139.871788114342 38.8034977066228, 139.871808789353 38.8034315798758, 139.871897615378 38.803266918571, 139.87206410636 38.803005209756, 139.872375307665 38.8026700898702, 139.872705843533 38.802314859889, 139.874874076902 38.8022605970418, 139.875437002294 38.8014348800927, 139.875563412778 38.8015055918201, 139.876582277045 38.8024539227794, 139.874713066844 38.8036660194992)) ^^http://www.opengis.net/ont/geosparql#wktLiteral