メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.750502994656 35.4048431806448, 136.750267690134 35.4048901181601, 136.749946040183 35.4049350674197, 136.74973684747 35.4039099347814, 136.749992681593 35.4038676462797, 136.750056029033 35.4038588501847, 136.750448484151 35.4037837925505, 136.750886751327 35.4037060028245, 136.751538185216 35.4035702814953, 136.751878536742 35.4034996181161, 136.752187219531 35.4045010016711, 136.751037953292 35.4047298774135, 136.750814741601 35.4047751673205, 136.750502994656 35.4048431806448)) ^^http://www.opengis.net/ont/geosparql#wktLiteral