gonum.org/v1/gonum@v0.14.0/graph/formats/rdf/testdata/test014-urdna2015.nq (about)

     1  <http://example.org/test> <http://example.org/vocab#bool> "true"^^<http://www.w3.org/2001/XMLSchema#boolean> .
     2  <http://example.org/test> <http://example.org/vocab#double> "1.23E0"^^<http://www.w3.org/2001/XMLSchema#double> .
     3  <http://example.org/test> <http://example.org/vocab#int> "123"^^<http://www.w3.org/2001/XMLSchema#integer> .