( Prokaryotes ( ( are ( the ( simplest ( living organism ) ) ) ) . ) )
(ROOT (S (NP (NNS Prokaryotes)) (VP (VBP are) (NP (DT the) (JJS simplest) (NN living) (NN organism))) (. .)))
Prokaryotes are the simplest living organism.
(ROOT (S (NP (NNS Prokaryotes)) (VP (VBD were) (NP (NP (DT the) (JJ first) (NN living) (NNS things)) (SBAR (S (VP (TO to) (VP (VB evolve) (PP (IN on) (NP (NN earth))))))))) (. .)))