fact: Definition sub_nonterminals_listT `{parser_computational_predataT} (x y : nonterminals_listT) : Prop := forall p, is_valid_nonterminal x p -> is_valid_nonterminal y p.
imports: Coq.Lists.List Coq.Arith.Wf_nat Fiat.Parsers.ContextFreeGrammar.Core