( ( ( ( Prokaryotes , ) ( on ( the ( other hand ) ) ) ) , ) ( ( are ( ( single-celled organisms ) ( such ( as ( ( bacteria and ) archaea ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Prokaryotes)) (, ,) (PP (IN on) (NP (DT the) (JJ other) (NN hand))) (, ,)) (VP (VBP are) (NP (NP (JJ single-celled) (NNS organisms)) (PP (JJ such) (IN as) (NP (NNS bacteria) (CC and) (NN archaea))))) (. .)))
Prokaryotes, on the other hand, are single-celled organisms such as bacteria and archaea.
(ROOT (S (NP (DT A) (JJ single-celled) (NN prokaryotic)) (VP (VBZ is) (NP (DT a) (NNS bacteria))) (. .)))