メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.424752155857 43.7974711604503, 142.425034638303 43.7976549386292, 142.425270010872 43.7977967345589, 142.425461093568 43.7979185743362, 142.425787885435 43.7981263139501, 142.425859918049 43.7981782600043, 142.426305763526 43.7984518832352, 142.42598588999 43.7987206605008, 142.425624701855 43.7990355599503, 142.424651295541 43.7998519110305, 142.42410573151 43.799514369851, 142.423601495265 43.799197085989, 142.423092967026 43.7988618388558, 142.423078438111 43.798874184863, 142.422590935768 43.7985695980306, 142.423076230177 43.7981524331382, 142.423567111927 43.7977512559113, 142.424250904255 43.7971535748299, 142.424630298756 43.7973912496206, 142.424752155857 43.7974711604503)) ^^http://www.opengis.net/ont/geosparql#wktLiteral