メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.119237222413 36.6995744675106, 137.118104832324 36.6996605464085, 137.116200478722 36.6998052788974, 137.116179473944 36.6996807204762, 137.115884238346 36.6996976330725, 137.115744132812 36.6989504221719, 137.116099110324 36.6989250855691, 137.117540678129 36.6988420516604, 137.118538288248 36.6987845799309, 137.118534136489 36.698581103228, 137.118965643576 36.6985688148627, 137.118992818278 36.6986438795883, 137.119118067997 36.6989970870104, 137.11911096759 36.6991159310079, 137.119181106034 36.699382024256, 137.119237222413 36.6995744675106)) ^^http://www.opengis.net/ont/geosparql#wktLiteral