メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.151592706712 35.0753904687999, 137.152153099146 35.0753811900079, 137.152382747577 35.0753650979901, 137.152503378532 35.0753454671702, 137.152584467063 35.0753369578907, 137.15284160227 35.0759194931975, 137.153008750451 35.0763169311836, 137.151767522088 35.0763651276052, 137.151683769688 35.0759612895781, 137.150807176512 35.0759958692641, 137.150225677397 35.0761094398953, 137.149666493445 35.0753521189844, 137.149709419325 35.0753530423314, 137.151592706712 35.0753904687999)) ^^http://www.opengis.net/ont/geosparql#wktLiteral