'd probably turn it off , convinced that you had already seen that movie 
(ROOT (S (VP (MD 'd) (ADVP (RB probably)) (VP (VB turn) (NP (PRP it)) (PRT (RP off)) (, ,) (S (ADJP (VBN convinced) (SBAR (IN that) (S (NP (PRP you)) (VP (VBD had) (ADVP (RB already)) (VP (VBN seen) (NP (DT that) (NN movie))))))))))))
(ROOT (S (VP (MD ) (ADVP (RB )) (VP (VB ) (NP (PRP )) (PRT (RP )) (, ) (S (ADJP (VBN ) (SBAR (IN ) (S (NP (PRP )) (VP (VBD ) (ADVP (RB )) (VP (VBN ) (NP (DT ) (NN ))))))))))))