メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.220624373907 36.6342644415342, 137.221387227659 36.6343549872082, 137.221790417594 36.6344028868433, 137.222740624647 36.6345345951072, 137.22280562937 36.6348944202553, 137.222871201531 36.6352216477239, 137.222073703228 36.6354857053075, 137.221629003259 36.6354024077524, 137.221606418907 36.6354838819131, 137.221193941777 36.6354192968779, 137.220413527835 36.6353341091367, 137.219169391803 36.6351830117936, 137.219371679152 36.6341160255804, 137.220213406262 36.6342154132015, 137.220624373907 36.6342644415342)) ^^http://www.opengis.net/ont/geosparql#wktLiteral