(motive : Option Lean.Grind.CommRing.Poly → Sort u_1) →
  (__x : Option Lean.Grind.CommRing.Poly) →
    ((p : Lean.Grind.CommRing.Poly) → motive (some p)) → ((x : Option Lean.Grind.CommRing.Poly) → motive x) → motive __x