to realize that they 've already seen this exact same movie a hundred times 
(ROOT (S (VP (TO to) (VP (VB realize) (SBAR (IN that) (S (NP (PRP they)) (VP (VBP 've) (ADVP (RB already)) (VP (VBN seen) (NP (DT this) (ADJP (RB exact) (JJ same)) (NN movie)) (NP (QP (DT a) (CD hundred)) (NNS times))))))))))
(ROOT (S (VP (TO ) (VP (VB ) (SBAR (IN ) (S (NP (PRP )) (VP (VBP ) (ADVP (RB )) (VP (VBN ) (NP (DT ) (ADJP (RB ) (JJ )) (NN )) (NP (QP (DT ) (CD )) (NNS ))))))))))