メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.361063444931 43.058993953631, 141.361293795925 43.0590229877443, 141.361829916943 43.059090559271, 141.361748611922 43.05939438595, 141.361525580607 43.0602274698567, 141.360787772384 43.0601375557476, 141.360547899557 43.0601039014206, 141.360409682548 43.0600844716755, 141.359976843731 43.0600236472122, 141.360049081138 43.0597706002983, 141.360091847957 43.0596208631843, 141.360300936745 43.0588887927441, 141.360420873456 43.0589053384759, 141.360933552495 43.0589760646255, 141.361063444931 43.058993953631)) ^^http://www.opengis.net/ont/geosparql#wktLiteral