is at once a tough pill to swallow and a minor miracle of self-expression . 
(ROOT (S (VP (VBZ is) (PP (IN at) (RB once)) (NP (NP (NP (DT a) (JJ tough) (NN pill)) (SBAR (S (VP (TO to) (VP (VB swallow)))))) (CC and) (NP (NP (DT a) (JJ minor) (NN miracle)) (PP (IN of) (NP (NN self) (HYPH -) (NN expression)))))) (. .)))
(ROOT (S (VP (VBZ ) (PP (IN ) (RB )) (NP (NP (NP (DT ) (JJ ) (NN )) (SBAR (S (VP (TO ) (VP (VB )))))) (CC ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NN ) (HYPH ) (NN )))))) (. )))