メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.053016761322 34.8642789893012, 137.052271310526 34.8635810454724, 137.052366418205 34.8635072553191, 137.052396291302 34.8635005222446, 137.052964014219 34.8640196208036, 137.053016761322 34.8642789893012)) ^^http://www.opengis.net/ont/geosparql#wktLiteral