∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.Limits.HasZeroObject C]
  [inst_2 : CategoryTheory.Limits.HasZeroMorphisms C] (X Y : C) [inst_3 : CategoryTheory.Limits.HasBinaryBiproduct X Y],
  CategoryTheory.IsPullback CategoryTheory.Limits.biprod.inl 0 CategoryTheory.Limits.biprod.snd 0 = True