saying nothing about kennedy 's assassination and revealing nothing about the pathology it pretends to investigate 
(ROOT (S (VP (VP (VBG saying) (NP (NN nothing)) (PP (IN about) (NP (NP (NNP kennedy) (POS 's)) (NN assassination)))) (CC and) (VP (VBG revealing) (NP (NP (NN nothing)) (PP (IN about) (NP (NP (DT the) (NN pathology)) (SBAR (S (NP (PRP it)) (VP (VBZ pretends) (S (VP (TO to) (VP (VB investigate))))))))))))))
(ROOT (S (VP (VP (VBG ) (NP (NN )) (PP (IN ) (NP (NP (NNP ) (POS )) (NN )))) (CC ) (VP (VBG ) (NP (NP (NN )) (PP (IN ) (NP (NP (DT ) (NN )) (SBAR (S (NP (PRP )) (VP (VBZ ) (S (VP (TO ) (VP (VB ))))))))))))))