メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.608016075974 42.6369330676112, 141.608490517261 42.6372360650767, 141.60890346353 42.6375035498973, 141.608612031312 42.6379280143609, 141.608555276757 42.6380324973966, 141.607803739366 42.6392099347848, 141.607136734725 42.6402886672529, 141.604711981782 42.639450390315, 141.605335597541 42.6384070189899, 141.605518690004 42.6380845028234, 141.606121728262 42.6370708322261, 141.606678551564 42.6361119022944, 141.607118055063 42.63637025608, 141.608016075974 42.6369330676112)) ^^http://www.opengis.net/ont/geosparql#wktLiteral