メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.057006086639 39.3842047264249, 140.05646843044 39.3843258069194, 140.056288044747 39.3839733569967, 140.056266286413 39.3839317609303, 140.057628402975 39.383680237081, 140.057758690056 39.3839709829197, 140.057682909265 39.3840601425147, 140.057006086639 39.3842047264249)) ^^http://www.opengis.net/ont/geosparql#wktLiteral