( ( In ( ( the nucleus ) ( of ( all ( living cells ) ) ) ) ) . )
(ROOT (FRAG (PP (IN In) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (DT all) (VBG living) (NNS cells))))) (. .)))
In the nucleus of all living cells.
(ROOT (S (NP (NP (DT The) (NNS cells)) (PP (IN of) (NP (DT all) (NNS protists)))) (VP (VBP have) (NP (DT a) (NN nucleus))) (. .)))