fact: Definition ensemble_le : Ensemble String -> Ensemble String -> Prop := fun s0 s1 => forall v, s0 v -> s1 v.
imports: Coq.Sets.Ensembles Coq.Classes.Morphisms Fiat.Parsers.ContextFreeGrammar.PreNotations Fiat.Parsers.ContextFreeGrammar.Carriers Fiat.Parsers.ContextFreeGrammar.Core Fiat.Parsers.ContextFreeGrammar.Precompute Fiat.Parsers.BaseTypes Fiat.Parsers.Splitters.RDPList Fiat.Parsers.ContextFreeGrammar.Fix.Definitions Fiat.Common.List.ListMorphisms