メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.354238606512 43.0388757342359, 141.354408642585 43.0389057601133, 141.354152556568 43.0393272130321, 141.354180870251 43.0394372901254, 141.354190342052 43.0396563017709, 141.353376805737 43.0395503414434, 141.35338358418 43.0395062277144, 141.352475151007 43.0394384096451, 141.352529921877 43.0389959005319, 141.352549681269 43.0387912542558, 141.352637360968 43.0380838579735, 141.353270808637 43.0381245529201, 141.354345993525 43.0382094944657, 141.354238606512 43.0388757342359)) ^^http://www.opengis.net/ont/geosparql#wktLiteral