Goal:
    A : Type  B : A → Type  C : A → Type  f : ∀ x : A, B x → C x
  ============================
   (∀ (l : list A) (a : All B l), make_All_All_graph l a (make_All_All a))


DEBUG:Going to execute:
pose proof CoreTactics.the_end_of_the_section as eos