spielberg knows how to tell us about people . 
(ROOT (S (NP (NNP spielberg)) (VP (VBZ knows) (SBAR (WHADVP (WRB how)) (S (VP (TO to) (VP (VB tell) (NP (PRP us)) (PP (IN about) (NP (NNS people)))))))) (. .)))
(ROOT (S (NP (NNP )) (VP (VBZ ) (SBAR (WHADVP (WRB )) (S (VP (TO ) (VP (VB ) (NP (PRP )) (PP (IN ) (NP (NNS )))))))) (. )))