メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.609540986109 35.4301377376904, 139.610261263931 35.4306545741264, 139.610015114144 35.430884784037, 139.609996012448 35.4308929162723, 139.609812058926 35.4310725016245, 139.609626271617 35.4312538427863, 139.608891573455 35.4307418280615, 139.608725327317 35.4306221552522, 139.608649414809 35.4305599030188, 139.608236201145 35.4303029067887, 139.608406565521 35.4301352233062, 139.608633062167 35.4299122882571, 139.608892160407 35.4296742958222, 139.609540986109 35.4301377376904)) ^^http://www.opengis.net/ont/geosparql#wktLiteral