( ( The ( parasympathetic system ) ) ( ( does ( just ( the opposite ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ parasympathetic) (NN system)) (VP (VBZ does) (NP (RB just) (DT the) (NN opposite))) (. .)))
The parasympathetic system does just the opposite.
(ROOT (S (NP (DT The) (JJ parasympathetic) (NN system)) (VP (MD can) (ADVP (RB also)) (VP (VB be) (VP (VBN referred) (S (VP (TO to))) (PP (IN as) (NP (DT the) (JJ craniosacral) (NN system)))))) (. .)))