{C : Type u_1} →
  [inst : CategoryTheory.Category.{v_1, u_1} C] →
    {W : CategoryTheory.MorphismProperty Cᵒᵖ} →
      {X Y : Cᵒᵖ} → W.RightFraction X Y → W.unop.LeftFraction (Opposite.unop Y) (Opposite.unop X)