∀ {J : Type u_1} {C : Type u_2} [inst : CategoryTheory.Category.{v_1, u_1} J]
  [inst_1 : CategoryTheory.Category.{v_2, u_2} C] (F : CategoryTheory.Functor J C) (X : C)
  (s : ↑(F.op.comp (CategoryTheory.yoneda.obj X)).sections) (j : J),
  ((CategoryTheory.Limits.opCompYonedaSectionsEquiv F X) s).app j = ↑s (Opposite.op j)