a tough pill to swallow and 
(ROOT (S (NP (NP (DT a) (JJ tough) (NN pill)) (SBAR (S (VP (TO to) (VP (VB swallow)))))) (CC and)))
(ROOT (S (NP (NP (DT ) (JJ ) (NN )) (SBAR (S (VP (TO ) (VP (VB )))))) (CC )))