(motive : Option (Lean.Expr × Lean.Expr × Lean.Expr) → Sort u_1) →
  (__do_lift : Option (Lean.Expr × Lean.Expr × Lean.Expr)) →
    (Unit → motive none) → ((α lhs rhs : Lean.Expr) → motive (some (α, lhs, rhs))) → motive __do_lift