∀ {R : Type u_1} {S : Type u_2} [inst : CommRing R] [inst_1 : CommRing S] [inst_2 : Algebra R S] (p : Ideal R)
  [p.IsPrime] (q : Ideal S) [inst_4 : q.IsPrime] [q.LiesOver p] [Algebra.EssFiniteType R S] [Algebra.QuasiFiniteAt R q],
  ∃ s ∉ q, ∀ (q' : Ideal S), q'.IsPrime → q' ≠ q → q'.LiesOver p → s ∈ q'