a decent draft in the auditorium might blow it off the screen 
(ROOT (S (NP (NP (DT a) (JJ decent) (NN draft)) (PP (IN in) (NP (DT the) (NN auditorium)))) (VP (MD might) (VP (VB blow) (NP (PRP it)) (PP (IN off) (NP (DT the) (NN screen)))))))
(ROOT (S (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (DT ) (NN )))) (VP (MD ) (VP (VB ) (NP (PRP )) (PP (IN ) (NP (DT ) (NN )))))))