メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.088421014291 43.5401086330698, 142.088710435708 43.541779579113, 142.087519965001 43.5419038694408, 142.086849243867 43.5418904060447, 142.086635506096 43.5418860842342, 142.087162992652 43.5401010346, 142.087208349519 43.5399797213304, 142.087478739504 43.5392758150419, 142.088361276542 43.539329137803, 142.088421014291 43.5401086330698)) ^^http://www.opengis.net/ont/geosparql#wktLiteral