メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.045777612841 42.8982856029799, 143.046086503807 42.898675566875, 143.045282474213 42.8990520157849, 143.045266204936 42.8992112931744, 143.045261645927 42.8992734297256, 143.044630585658 42.8992273064643, 143.044639663499 42.8991594417365, 143.044708600105 42.8987399886065, 143.04475517933 42.8984268228832, 143.044793895992 42.8980750982774, 143.045624580197 42.8980981016075, 143.045669041007 42.8981445645781, 143.045777612841 42.8982856029799)) ^^http://www.opengis.net/ont/geosparql#wktLiteral