メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.192254998858 35.3661308467624, 137.190721930606 35.3656458591294, 137.190957315404 35.364638062203, 137.192431527523 35.3651108053222, 137.192378461578 35.3656686363637, 137.192254998858 35.3661308467624)) ^^http://www.opengis.net/ont/geosparql#wktLiteral