メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.7827425452 43.2148712875559, 141.783195665285 43.2159758904627, 141.782564407914 43.2165841209505, 141.782086683594 43.2170378304945, 141.781877164247 43.2172437413345, 141.781727897658 43.2173791453807, 141.781542748821 43.2171584719486, 141.781498918558 43.2170933786753, 141.781170714425 43.2166055003216, 141.781168813484 43.2166026793908, 141.780264719166 43.2153702634144, 141.780491043479 43.2151546489697, 141.780569075334 43.2150793648065, 141.780656377498 43.2149674773995, 141.781411177625 43.2142174172829, 141.7827425452 43.2148712875559)) ^^http://www.opengis.net/ont/geosparql#wktLiteral