メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.634257102491 35.3600494618548, 136.633004794407 35.3599771753612, 136.633044770953 35.3594210843963, 136.634296087394 35.3595120980232, 136.634277084249 35.3597749725217, 136.634257102491 35.3600494618548)) ^^http://www.opengis.net/ont/geosparql#wktLiteral