( Need ( ( microscope ( to ( observe ( individual cells ) ) ) ) . ) )
(ROOT (S (NP (NNP Need)) (VP (VBZ microscope) (S (VP (TO to) (VP (VB observe) (NP (JJ individual) (NNS cells)))))) (. .)))
Need microscope to observe individual cells.
(ROOT (S (NP (DT A) (NN microscope)) (VP (MD would) (ADVP (RBS best)) (VP (VB help) (S (NP (DT a) (NN person)) (VP (VB observe) (NP (NP (DT the) (NNS parts)) (PP (IN of) (NP (DT a) (NN plant) (NN cell)))))))) (. .)))