メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.38499723097 43.7644202349973, 142.385326831564 43.7650855869059, 142.383688245866 43.7654371167047, 142.383408644923 43.7649455384926, 142.383329394297 43.7647711437499, 142.383192779372 43.7645542710406, 142.383066862346 43.76431117348, 142.384547974819 43.7639905828475, 142.384846707085 43.7639390933861, 142.385067067353 43.7644039089232, 142.38499723097 43.7644202349973)) ^^http://www.opengis.net/ont/geosparql#wktLiteral