メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.699883668212 44.3648132248677, 141.699807527123 44.364863589973, 141.699572398615 44.3650190788949, 141.698859810998 44.3654636440991, 141.698855767214 44.3654663318181, 141.697893165144 44.3647065939934, 141.697785009559 44.364622536223, 141.698249267846 44.3643247181803, 141.69875064699 44.3640029947232, 141.698805769275 44.3639676472983, 141.699443274626 44.364468383692, 141.699883668212 44.3648132248677)) ^^http://www.opengis.net/ont/geosparql#wktLiteral