(motive : Option (ℕ × Lean.Expr) → Sort u_1) →
  (__do_lift : Option (ℕ × Lean.Expr)) →
    ((n : ℕ) → (snd : Lean.Expr) → motive (some (n, snd))) →
      ((x : Option (ℕ × Lean.Expr)) → motive x) → motive __do_lift