メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.832485186556 43.0823635491868, 142.831284100498 43.0821311731136, 142.829499069939 43.0817859119586, 142.829440154297 43.0817753097528, 142.829581715677 43.0814791344595, 142.829890395952 43.080677068837, 142.829957656293 43.080692551839, 142.83102737868 43.0809322213318, 142.831969402729 43.0811414442218, 142.832906509783 43.081347449825, 142.832620122198 43.0820429998171, 142.832568208682 43.0821690145067, 142.832485186556 43.0823635491868)) ^^http://www.opengis.net/ont/geosparql#wktLiteral