remind us of how very bad a motion picture can truly be 
(ROOT (S (VP (VB remind) (NP (PRP us)) (PP (IN of) (SBAR (WHADJP (WRB how) (RB very) (JJ bad)) (S (NP (DT a) (NN motion) (NN picture)) (VP (MD can) (ADVP (RB truly)) (VP (VB be)))))))))
(ROOT (S (VP (VB ) (NP (PRP )) (PP (IN ) (SBAR (WHADJP (WRB ) (RB ) (JJ )) (S (NP (DT ) (NN ) (NN )) (VP (MD ) (ADVP (RB )) (VP (VB )))))))))