(motive : Option (Lean.Expr × Lean.Expr × Lean.Expr) → Sort u_1) →
  (x : Option (Lean.Expr × Lean.Expr × Lean.Expr)) →
    ((α e₁ e₂ : Lean.Expr) → motive (some (α, e₁, e₂))) →
      ((x : Option (Lean.Expr × Lean.Expr × Lean.Expr)) → motive x) → motive x