メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.426062923888 43.7644909780561, 142.425319045631 43.7648442814635, 142.425282481137 43.764446892808, 142.425241356649 43.7639998295004, 142.425906203194 43.7639603538839, 142.426948635241 43.7638984452166, 142.427362211547 43.763873884836, 142.426217101791 43.7644177665998, 142.426062923888 43.7644909780561)) ^^http://www.opengis.net/ont/geosparql#wktLiteral