( ( The cell ) ( ( is ( ( the ( smallest ( living thing ) ) ) ( that ( can ( perform ( ( all ( the functions ) ) ( of life ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN cell)) (VP (VBZ is) (NP (NP (DT the) (JJS smallest) (NN living) (NN thing)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB perform) (NP (NP (PDT all) (DT the) (NNS functions)) (PP (IN of) (NP (NN life)))))))))) (. .)))
The cell is the smallest living thing that can perform all the functions of life.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN cell)) (VP (VBZ is) (NP (NP (DT the) (JJS lowest) (NN level)) (PP (IN of) (NP (NN organism))) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB perform) (NP (NP (DT all) (NNS activities)) (VP (VBN required) (PP (IN for) (NP (NN life))))))))))) (. .)))