sing beautifully and act adequately . 
(ROOT (S (VP (VP (VB sing) (ADVP (RB beautifully))) (CC and) (VP (VB act) (ADVP (RB adequately)))) (. .)))
(ROOT (S (VP (VP (VB ) (ADVP (RB ))) (CC ) (VP (VB ) (ADVP (RB )))) (. )))