メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.18818015077 34.6857111106147, 135.188639220936 34.6857800019558, 135.188591506313 34.685915559224, 135.188443577872 34.6863876217252, 135.188335759508 34.6867805226649, 135.187791460968 34.6866491254489, 135.187142799179 34.6864508474409, 135.187262671307 34.6861682939694, 135.187480588017 34.6856033399047, 135.18818015077 34.6857111106147)) ^^http://www.opengis.net/ont/geosparql#wktLiteral