メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.623048979557 35.3633119810369, 136.622688862721 35.3632480367536, 136.622637954573 35.3619472572827, 136.622924848844 35.3619365072971, 136.622999523111 35.3619343780977, 136.623010035578 35.3623676604606, 136.623022380633 35.3628674995266, 136.623048979557 35.3633119810369)) ^^http://www.opengis.net/ont/geosparql#wktLiteral