メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.640490232466 36.5714471609666, 136.639740521073 36.5718405590729, 136.639098385304 36.5721641253303, 136.639063448058 36.5717889880966, 136.638721568773 36.5715523861717, 136.638562435583 36.5715334459349, 136.638583746343 36.571231001785, 136.639775838989 36.57131305193, 136.64008726255 36.5713240013729, 136.64037666638 36.5713380233012, 136.640538247576 36.5713500713817, 136.640507969987 36.571412458976, 136.640490232466 36.5714471609666)) ^^http://www.opengis.net/ont/geosparql#wktLiteral