( It ( ( might ( be ( to ( ( work crosstracks ) ( in another ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (MD might) (VP (VB be) (S (VP (TO to) (VP (VB work) (NP (NNS crosstracks)) (PP (IN in) (NP (DT another)))))))) (. .)))
It might be to work crosstracks in another.
(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)))) (. .)))