( ( All ( living things ) ) ( ( are ( composed ( of ( ( ( ( one or ) more ) cells ) ( that ( come ( from ( preexisting cells ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT All) (VBG living) (NNS things)) (VP (VBP are) (VP (VBN composed) (PP (IN of) (NP (NP (QP (CD one) (CC or) (JJR more)) (NNS cells)) (SBAR (WHNP (WDT that)) (S (VP (VBN come) (PP (IN from) (NP (VBG preexisting) (NNS cells)))))))))) (. .)))
All living things are composed of one or more cells that come from preexisting cells.
(ROOT (S (NP (NNS Cells)) (VP (VBP come) (PP (IN from) (NP (VBG preexisting) (NNS cells)))) (. .)))