that george lucas can only dream of 
(ROOT (SBAR (WHNP (IN that)) (S (NP (NNP george) (NNP lucas)) (VP (MD can) (ADVP (RB only)) (VP (VB dream) (PP (IN of)))))))
(ROOT (SBAR (WHNP (IN )) (S (NP (NNP ) (NNP )) (VP (MD ) (ADVP (RB )) (VP (VB ) (PP (IN )))))))