alternates between deadpan comedy and heartbreaking 
(ROOT (S (VP (VBZ alternates) (PP (IN between) (NP (NP (JJ deadpan) (NN comedy)) (CC and) (NP (NN heartbreaking)))))))
(ROOT (S (VP (VBZ ) (PP (IN ) (NP (NP (JJ ) (NN )) (CC ) (NP (NN )))))))