ice age wo n't drop your jaw , but 
(ROOT (S (S (NP (NN ice) (NN age)) (VP (MD wo) (RB n't) (VP (VB drop) (NP (PRP$ your) (NN jaw))))) (, ,) (CC but)))
(ROOT (S (S (NP (NN ) (NN )) (VP (MD ) (RB ) (VP (VB ) (NP (PRP$ ) (NN ))))) (, ) (CC )))