メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.57267834852 42.6233163828844, 141.573445304714 42.6234427393565, 141.574216101581 42.6235838826621, 141.574009329808 42.624102578443, 141.573859818247 42.6245355219156, 141.573654495745 42.6249204488556, 141.573330573527 42.6254830429488, 141.572360697761 42.6253301634393, 141.571810580181 42.6252378611897, 141.571266527742 42.6251440447559, 141.570270565619 42.6249925416429, 141.568158233205 42.6246591119357, 141.568604584584 42.6241255360632, 141.568802708754 42.6238784330203, 141.568979775035 42.6236583533958, 141.569195320685 42.623385469964, 141.569718127087 42.6227209577193, 141.571002489518 42.622986992658, 141.57267834852 42.6233163828844)) ^^http://www.opengis.net/ont/geosparql#wktLiteral