how funny they could have been in a more ambitious movie 
(ROOT (SBAR (WHADJP (WRB how) (JJ funny)) (S (NP (PRP they)) (VP (MD could) (VP (VB have) (VP (VBN been) (PP (IN in) (NP (DT a) (ADJP (RBR more) (JJ ambitious)) (NN movie)))))))))
(ROOT (SBAR (WHADJP (WRB ) (JJ )) (S (NP (PRP )) (VP (MD ) (VP (VB ) (VP (VBN ) (PP (IN ) (NP (DT ) (ADJP (RBR ) (JJ )) (NN )))))))))