∀ {X : AlgebraicGeometry.Scheme} {U : X.AffineZariskiSite} (motive : (x : X.AffineZariskiSite) → (x ⟶ U) → Prop)
  (x : X.AffineZariskiSite) (x_1 : x ⟶ U),
  (∀ (V : X.Opens) (hV : AlgebraicGeometry.IsAffineOpen V) (x : ⟨V, hV⟩ ⟶ U), motive ⟨V, hV⟩ x) → motive x x_1