 [det]rdf_save_trig(+Spec, 
:Options)Save multiple RDF graphs into a TriG file. Options are the 
same as for rdf_save_turtle/2. rdf_save_trig/2 
ignores the
[det]rdf_save_trig(+Spec, 
:Options)Save multiple RDF graphs into a TriG file. Options are the 
same as for rdf_save_turtle/2. rdf_save_trig/2 
ignores the
graph(+Graph) option and instead processes one additional 
option:
- graphs(+ListOfGraphs)
- List of graphs to save. When omitted, all graphs in the RDF store are 
stored in the TriG file.