this cold vacuum of a comedy to start a reaction 
(ROOT (NP (NP (NP (DT this) (JJ cold) (NN vacuum)) (PP (IN of) (NP (DT a) (NN comedy)))) (SBAR (S (VP (TO to) (VP (VB start) (NP (DT a) (NN reaction))))))))
(ROOT (NP (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (DT ) (NN )))) (SBAR (S (VP (TO ) (VP (VB ) (NP (DT ) (NN ))))))))