メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.706327589072 44.3621734569487, 141.706159207968 44.3622843493286, 141.705753037679 44.3617504413697, 141.705409264191 44.3614803710149, 141.705230714304 44.3613400825384, 141.7064867185 44.3605240951754, 141.707009830999 44.3609658834666, 141.707047647722 44.3609942599402, 141.707552114051 44.361375767918, 141.706389715655 44.3621325138359, 141.706327589072 44.3621734569487)) ^^http://www.opengis.net/ont/geosparql#wktLiteral