( ( They ( ( will specifically ) ( be ( looking ( at ( ( ( the ( sympathetic ( nervous system ) ) ) and ) ( the role ) ) ) ) ) ) ) ( it ( plays . ) ) )
(ROOT (S (S (NP (PRP They)) (VP (MD will) (ADVP (RB specifically)) (VP (VB be) (VP (VBG looking) (PP (IN at) (NP (NP (DT the) (JJ sympathetic) (JJ nervous) (NN system)) (CC and) (NP (DT the) (NN role)))))))) (NP (PRP it)) (VP (VBZ plays)) (. .)))
They will specifically be looking at the sympathetic nervous system and the role it plays.
(ROOT (S (NP (DT The) (JJ nervous) (NN system)) (VP (VBZ plays) (NP (NP (DT a) (JJ critical) (NN role)) (PP (IN in) (NP (NP (DT the) (NN regulation)) (PP (IN of) (NP (NN vascular) (NNS homeostasis))))))) (. .)))