メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.430351510946 43.8065298543225, 142.430866043124 43.8068333724403, 142.431380055924 43.8071755299092, 142.430222870234 43.8081591224525, 142.429635563075 43.8077948538817, 142.429166252797 43.8074989061591, 142.429199584474 43.8074714120533, 142.42896720158 43.8073337715274, 142.428680824013 43.8071527209046, 142.428505626408 43.8070495352104, 142.428175545763 43.806843745315, 142.427633856858 43.8065054479822, 142.428767111101 43.8055561290346, 142.429114523767 43.8057666708755, 142.429310624672 43.8058927135088, 142.42962183014 43.8060894396369, 142.429988371768 43.8062984023097, 142.430351510946 43.8065298543225)) ^^http://www.opengis.net/ont/geosparql#wktLiteral