she may not be real , but the laughs are . 
(ROOT (S (S (NP (PRP she)) (VP (MD may) (RB not) (VP (VB be) (ADJP (JJ real))))) (, ,) (CC but) (S (NP (DT the) (NNS laughs)) (VP (VBP are))) (. .)))
(ROOT (S (S (NP (PRP )) (VP (MD ) (RB ) (VP (VB ) (ADJP (JJ ))))) (, ) (CC ) (S (NP (DT ) (NNS )) (VP (VBP ))) (. )))