メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.189903553232 34.8133075915916, 137.18986258273 34.8133752098557, 137.189739638946 34.8134541120968, 137.189193001335 34.8127104999619, 137.188468728109 34.8117640863776, 137.188728297456 34.8117302341772, 137.188919565493 34.8117301991982, 137.189124511234 34.8118090402275, 137.189493440365 34.8120794130727, 137.189684757404 34.8123160134637, 137.189862369072 34.8123385164475, 137.189848732655 34.8124737399481, 137.189999122946 34.8129695210679, 137.190026470827 34.8130934682919, 137.189971845449 34.8132061628533, 137.189903553232 34.8133075915916)) ^^http://www.opengis.net/ont/geosparql#wktLiteral