it does not attempt to filter out the complexity 
(ROOT (S (NP (PRP it)) (VP (VBZ does) (RB not) (VP (VB attempt) (S (VP (TO to) (VP (VB filter) (PRT (RP out)) (NP (DT the) (NN complexity)))))))))
(ROOT (S (NP (PRP )) (VP (VBZ ) (RB ) (VP (VB ) (S (VP (TO ) (VP (VB ) (PRT (RP )) (NP (DT ) (NN )))))))))