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extract BGF |home:///projects/webzoo-prep/zoo/ada/ada95/kempe/extracted/grammar.bgf|.
// Thanks Othon Batista,!
replace ("-" "-") with "-" in unary_adding_operator.
// Next steps suggested by Vadim Zaytsev,
reroot to compilation.
// NB: this is still a level 1 grammar, it is not fully connected and has multiple top nonterminals!
export BGF |home:///projects/webzoo-prep/zoo/ada/ada95/kempe/corrected/grammar.bgf|.