( ( ( More work ) ( for ( ( ( ( ( the scientists ) -LRB- ) and ) ( ( another reason ) ( for ( going ( back there ) ) ) ) ) -RRB- ) ) ) . )
(ROOT (NP (NP (JJR More) (NN work)) (PP (IN for) (NP (NP (DT the) (NNS scientists)) (-LRB- -LRB-) (CC and) (NP (NP (DT another) (NN reason)) (PP (IN for) (S (VP (VBG going) (ADVP (RB back) (RB there)))))) (-RRB- -RRB-))) (. .)))
More work for the scientists (and another reason for going back there).
(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)))) (. .)))