at one man 's downfall , brought about by his lack of self-awareness 
(ROOT (PP (IN at) (NP (NP (NP (CD one) (NN man) (POS 's)) (NN downfall)) (, ,) (VP (VBN brought) (PRT (RP about)) (PP (IN by) (NP (NP (PRP$ his) (NN lack)) (PP (IN of) (NP (NN self) (HYPH -) (NN awareness)))))))))
(ROOT (PP (IN ) (NP (NP (NP (CD ) (NN ) (POS )) (NN )) (, ) (VP (VBN ) (PRT (RP )) (PP (IN ) (NP (NP (PRP$ ) (NN )) (PP (IN ) (NP (NN ) (HYPH ) (NN )))))))))