∀ (x : AlgebraicGeometry.Scheme) (s : CategoryTheory.Sieve x)
  (motive : s ∈ AlgebraicGeometry.Scheme.jointlySurjectivePretopology.toGrothendieck.sieves x → Prop)
  (x_1 : s ∈ AlgebraicGeometry.Scheme.jointlySurjectivePretopology.toGrothendieck.sieves x),
  (∀ (w : CategoryTheory.Presieve x) (hp : w ∈ AlgebraicGeometry.Scheme.jointlySurjectivePretopology.coverings x)
      (hps : w ≤ s.arrows), motive ⋯) →
    motive x_1