メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.363833989867 43.7342864912296, 142.363761909683 43.7344141773146, 142.36326816968 43.7352825844741, 142.359822123947 43.7342624572401, 142.359861809518 43.7342289115612, 142.36022986007 43.7338829642521, 142.360756534296 43.7334042717416, 142.361043630406 43.7330475366576, 142.361531301379 43.7323703976406, 142.362925874654 43.7327050544418, 142.364491720969 43.7331214642861, 142.364063565443 43.733879843029, 142.363833989867 43.7342864912296)) ^^http://www.opengis.net/ont/geosparql#wktLiteral