メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.791879703957 35.4390288152786, 136.790711897401 35.441612975019, 136.789407953223 35.4411870501192, 136.78949437306 35.4390434653423, 136.789739376419 35.439037549276, 136.790269689416 35.4390452045879, 136.790868468611 35.4390683180332, 136.791198779427 35.4390918903144, 136.791879703957 35.4390288152786)) ^^http://www.opengis.net/ont/geosparql#wktLiteral