it goes down easy , leaving virtually no aftertaste . 
(ROOT (S (NP (PRP it)) (VP (VBZ goes) (ADVP (RB down)) (ADVP (JJ easy)) (, ,) (S (VP (VBG leaving) (NP (ADJP (RB virtually) (DT no)) (NN aftertaste))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (ADVP (RB )) (ADVP (JJ )) (, ) (S (VP (VBG ) (NP (ADJP (RB ) (DT )) (NN ))))) (. )))