( Now ( ( works ( as ( a replicant ) ) ) . ) )
(ROOT (S (NP (RB Now)) (VP (VBZ works) (PP (IN as) (NP (DT a) (NN replicant)))) (. .)))
Now works as a replicant.
(ROOT (S (S (VP (TO To) (VP (VB confirm) (NP (NP (DT the) (NN work)) (PP (IN of) (NP (DT another) (NN scientist))))))) (, ,) (NP (DT a) (NN scientist)) (VP (MD might) (VP (VB replicate) (NP (PRP$ their) (NN work)))) (. .)))