メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.695435383427 43.0048733473311, 141.694249908346 43.005310322919, 141.69296512573 43.0057804219594, 141.692220485998 43.0047249821153, 141.691969000694 43.0043894685473, 141.69187592087 43.0042551729005, 141.692326733485 43.0040959633296, 141.692083317672 43.0037477589886, 141.692577345852 43.0035724426102, 141.693698203965 43.0031528930419, 141.695194226498 43.0026390823029, 141.695261236068 43.002732103918, 141.695402407383 43.0029374541337, 141.695726613743 43.0034091234637, 141.695757629548 43.0034553411502, 141.696129901184 43.0039850541341, 141.696496075786 43.0045060148397, 141.695435383427 43.0048733473311)) ^^http://www.opengis.net/ont/geosparql#wktLiteral