afs commented on PR #209:
URL: https://github.com/apache/jena-site/pull/209#issuecomment-2812974982

   I think @VladimirAlexiev is misreading the document.
   
   "Complete Form" is complete for the changes for this feature. 
   
   `FROM` has no effect on the template, it affects the `WHERE` clause.
   We might wish to change the title but the example is valid.
   
   > FROM NAMED :g  # or FROM :g, optional
   
   What does optional mean here?
   
   It does not need `FROM`/ `FROM NAMED` to make the `GRAPH :g` in the template 
work. There doesn't even have to be a graph named `:g` in the dataset. It's a 
template for quads.
   
   To say `FROM :g` creates a dataset with only a default graph, unnamed. 
   To say `FROM NAMED :g`, create a dataset with an empty default graph.
   (FWIW I believe GraphDB will select graph from the dataset.)
   


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