メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.19197773499 35.367086963929, 137.19153792068 35.3670017679497, 137.190719423433 35.366841570183, 137.190690288497 35.3657454424038, 137.190721930606 35.3656458591294, 137.192254998858 35.3661308467624, 137.192113056821 35.3666101739656, 137.19197773499 35.367086963929)) ^^http://www.opengis.net/ont/geosparql#wktLiteral