pollyana would reach for a barf bag 
(ROOT (S (NP (NN pollyana)) (VP (MD would) (VP (VB reach) (PP (IN for) (NP (DT a) (NN barf) (NN bag)))))))
(ROOT (S (NP (NN )) (VP (MD ) (VP (VB ) (PP (IN ) (NP (DT ) (NN ) (NN )))))))