∀ {J : Type v} [inst : CategoryTheory.Category.{u, v} J] {F : CategoryTheory.Functor J MonCat}
  {motive : (a a_1 : MonCat.Colimits.Prequotient F) → MonCat.Colimits.Relation F a a_1 → Prop}
  (x y z : MonCat.Colimits.Prequotient F), MonCat.Colimits.Relation.below ⋯