メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.370931909153 37.3685605812523, 140.369536932239 37.3686164935943, 140.369456149718 37.3676438082978, 140.370384326983 37.3673996650211, 140.3709060272 37.3685056471244, 140.370931909153 37.3685605812523)) ^^http://www.opengis.net/ont/geosparql#wktLiteral