Re: Combined grammar (work in progress)

Observation:

   The quad templates in SPARQL 1.1 Update use GRAPH.

   SPARQL triple templates and BGP are like Turtle with variables.

   Should we allow the style of TriG+variables?

(grammar wise, it's no big deal because of the "no repeating bnode 
labels" rule).

   What about N-Quads?

N-Quads is not a subset of TrIG unlike N-triples and Turtle - worse, 
N-Quads puts the graph node at the end (for good reasons) while TriG 
puts the graph name before the triples.

	Andy