メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.849256687642 43.3430845168963, 141.84758876443 43.3433445011916, 141.847512697403 43.3434397374589, 141.847357137714 43.343652983142, 141.847294589067 43.3437877900724, 141.847083162269 43.3437189000985, 141.846491212381 43.3417032967966, 141.848812607733 43.3413347864647, 141.849345058335 43.3412486018341, 141.851128445106 43.3409644512566, 141.85113909298 43.3410013398581, 141.851226890266 43.3413058771888, 141.85148274895 43.3421933733877, 141.851641096157 43.3426959140956, 141.849256687642 43.3430845168963)) ^^http://www.opengis.net/ont/geosparql#wktLiteral