by not averting his eyes , solondz forces us to consider the unthinkable , the unacceptable , the unmentionable . 
(ROOT (S (PP (IN by) (S (RB not) (VP (VBG averting) (NP (PRP$ his) (NNS eyes))))) (, ,) (NP (NN solondz)) (VP (VBZ forces) (NP (PRP us)) (S (VP (TO to) (VP (VB consider) (NP (NP (DT the) (JJ unthinkable)) (, ,) (NP (DT the) (JJ unacceptable)) (, ,) (NP (DT the) (JJ unmentionable))))))) (. .)))
(ROOT (S (PP (IN ) (S (RB ) (VP (VBG ) (NP (PRP$ ) (NNS ))))) (, ) (NP (NN )) (VP (VBZ ) (NP (PRP )) (S (VP (TO ) (VP (VB ) (NP (NP (DT ) (JJ )) (, ) (NP (DT ) (JJ )) (, ) (NP (DT ) (JJ ))))))) (. )))