メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.418629399954 43.7330701766239, 142.418676552877 43.7335487637, 142.418721100653 43.7340009139402, 142.418764361596 43.7344400549891, 142.416366506282 43.7345977832501, 142.416325136831 43.7341353959274, 142.416299450281 43.7338482958229, 142.416174607629 43.7336029162087, 142.416002992657 43.7332884762, 142.416538350188 43.7331444127677, 142.417660331393 43.732842827957, 142.418244434857 43.7327372394516, 142.41859232603 43.7326938923961, 142.418629399954 43.7330701766239)) ^^http://www.opengis.net/ont/geosparql#wktLiteral