メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.264045344692 44.0217084413087, 144.263677624722 44.0216463580635, 144.263472824419 44.021601299968, 144.263235783668 44.021542162966, 144.262617520629 44.0213445494542, 144.262975440406 44.0208640345722, 144.26303420468 44.020809499675, 144.263751043341 44.0208795260481, 144.26378404359 44.0210540322574, 144.264159379395 44.0210936142364, 144.264045344692 44.0217084413087)) ^^http://www.opengis.net/ont/geosparql#wktLiteral