メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.349030422113 43.0258533368534, 141.348985239462 43.0263144196989, 141.348958234257 43.026312589352, 141.348864640421 43.0269901205048, 141.347531996229 43.0268982457255, 141.347629286123 43.0262180028287, 141.347663154997 43.025895170765, 141.347716352053 43.0254896428196, 141.34905689315 43.0255835461715, 141.349053061934 43.0256226904627, 141.349030422113 43.0258533368534)) ^^http://www.opengis.net/ont/geosparql#wktLiteral