メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.045133417622 42.900478847572, 143.044467647307 42.9004312065986, 143.044531054111 42.8999721226912, 143.044630585658 42.8992273064643, 143.045261645927 42.8992734297256, 143.045235137962 42.899637026208, 143.045188222604 42.9000503491182, 143.045133417622 42.900478847572)) ^^http://www.opengis.net/ont/geosparql#wktLiteral