“…In [46], Witte-Morris and Lifschitz proved some cases in Q-rank one, including the case of non-uniform lattices in products of SL(2, R), their proof uses the bounded generation by unipotents property proven by Carter-Keller, [58]. The case where Γ is cocompact, which in some sense is the most common case among lattices as was shown by Belolipetsky and Lubotzky [8], was the main open problem.…”