fact: Definition Attributes2 (heading : RawHeading2) : Set := Fin.t (NumAttr2 heading).
imports: Coq.Lists.List Coq.Strings.String Coq.Logic.FunctionalExtensionality Coq.Sets.Ensembles Fiat.Common.ilist Fiat.Common.StringBound Coq.Program.Program Fiat.QueryStructure.Specification.Representation.Notations