{R : Type v} →
  {A : Type u} →
    [inst : CommRing R] →
      [inst_1 : CommRing A] →
        [inst_2 : Algebra R A] →
          {motive : Algebra.FormallyUnramified R A → Sort u_1} →
            (t : Algebra.FormallyUnramified R A) →
              ((subsingleton_kaehlerDifferential : Subsingleton Ω[A⁄R]) → motive ⋯) → motive t