メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.148336481676 35.0602623690164, 137.147864420814 35.0604197532174, 137.147254249 35.0606478867285, 137.146837079517 35.0607906293092, 137.146274350714 35.0611652600545, 137.146128242996 35.0609640192885, 137.145624143904 35.0601613248754, 137.146087482774 35.0599416873369, 137.146312816212 35.0602159778707, 137.146854684414 35.0599880426887, 137.146377378684 35.0592127523024, 137.147027166225 35.0590835068569, 137.147566790156 35.0589733970534, 137.148336481676 35.0602623690164)) ^^http://www.opengis.net/ont/geosparql#wktLiteral