メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.653624851751 43.0653676582792, 141.653404704134 43.065601343565, 141.652850426897 43.0661897201588, 141.650752099103 43.0683971827591, 141.650110065292 43.0680731136814, 141.650099947463 43.0680679968742, 141.649415599482 43.0677212665781, 141.65153854923 43.0654995396353, 141.651603327556 43.0654321496559, 141.652096691641 43.0649187144778, 141.652641693151 43.0643516734449, 141.653946502135 43.0650178928818, 141.653624851751 43.0653676582792)) ^^http://www.opengis.net/ont/geosparql#wktLiteral