メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.977815646695 43.5520405004981, 144.977273995475 43.5524467258294, 144.977440875244 43.5525837994726, 144.976827837541 43.5525525518563, 144.976432390599 43.5517641938121, 144.976451058379 43.5517494019326, 144.976927286482 43.5513717103707, 144.976955527891 43.5513933274832, 144.977226170094 43.5515930747596, 144.977744854845 43.5519886787115, 144.977815646695 43.5520405004981)) ^^http://www.opengis.net/ont/geosparql#wktLiteral