∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] (X Y : C)
  [inst_1 : CategoryTheory.Limits.HasBinaryProduct X Y] [inst_2 : CategoryTheory.Limits.HasTerminal C],
  CategoryTheory.IsPullback CategoryTheory.Limits.prod.fst CategoryTheory.Limits.prod.snd
    (CategoryTheory.Limits.terminal.from X) (CategoryTheory.Limits.terminal.from Y)