メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.987913853639 34.9050414033035, 136.987671112133 34.9051070380653, 136.987328736659 34.9051166758618, 136.986794259398 34.9051239862274, 136.986032043915 34.905089404277, 136.985618840992 34.9050597030146, 136.985027276895 34.9050290311362, 136.985100580303 34.9041810369046, 136.98596631421 34.9041813405017, 136.987622649857 34.9041766756738, 136.987913853639 34.9050414033035)) ^^http://www.opengis.net/ont/geosparql#wktLiteral