( ( 1 -RRB- ) ( ( The ( reticular formation ) ) ( III . ) ) )
(ROOT (S (LST (LS 1) (-RRB- -RRB-)) (NP (DT The) (NN reticular) (NN formation)) (VP (VBZ III)) (. .)))
1) The reticular formation III.
(ROOT (S (NP (JJ Reticular) (NN formation)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN of) (NP (NP (DT the) (NN formation)) (SBAR (WHNP (WDT that)) (S (VP (VBZ regulates) (NP (NN sleep) (CC and) (NN arousal))))))))) (. .)))