( ( Work ( with replication ) ) . )
(ROOT (S (VP (VB Work) (PP (IN with) (NP (NN replication)))) (. .)))
Work with replication.
(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)))) (. .)))