メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.040431015079 42.912454597509, 143.039665346612 42.9123939693438, 143.039788252936 42.9113004432342, 143.040583662835 42.9113458143958, 143.040431015079 42.912454597509)) ^^http://www.opengis.net/ont/geosparql#wktLiteral