メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.971487056153 37.1711306166616, 138.969091449731 37.1717037751257, 138.96954361698 37.1723420618135, 138.969255487466 37.1729235145798, 138.968852732745 37.1738359540799, 138.967894653062 37.1757040234878, 138.967111573951 37.1750685187758, 138.966956440444 37.1749781740041, 138.965622838574 37.1745896164724, 138.964477348213 37.174267323267, 138.9650694931 37.1728324901562, 138.965037350044 37.1727341236075, 138.965563230893 37.1725856204885, 138.96580728083 37.1725152452522, 138.965784037303 37.1718085155724, 138.965768428062 37.1710626847098, 138.965771449048 37.169753787513, 138.965761643972 37.1689296510916, 138.965751032817 37.1679666911058, 138.965747348018 37.1675666201297, 138.966657425202 37.1675663401049, 138.967768853691 37.1675577934715, 138.968428393554 37.1675577177399, 138.968434910969 37.1681149776962, 138.969293826561 37.1681131913023, 138.970141496524 37.1681057393128, 138.969617852746 37.16903660945, 138.971487056153 37.1711306166616)) ^^http://www.opengis.net/ont/geosparql#wktLiteral