The Vice President's military aide told us he believed the Vice President spoke to the President just after entering the conference room, but he did not hear what they said.
( ( ( ( ( ( ( The ( Vice ( President 's ) ) ) ( military aide ) ) ( ( told us ) ( he ( believed ( ( the ( Vice President ) ) ( ( spoke ( to ( the President ) ) ) ( just ( after ( entering ( the ( conference room ) ) ) ) ) ) ) ) ) ) ) , ) but ) ( he ( ( did not ) ( hear ( what ( they said ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NNP Vice) (NNP President) (POS 's)) (JJ military) (NN aide)) (VP (VBD told) (NP (PRP us)) (SBAR (S (NP (PRP he)) (VP (VBD believed) (SBAR (S (NP (DT the) (NNP Vice) (NNP President)) (VP (VBD spoke) (PP (TO to) (NP (DT the) (NNP President))) (PP (RB just) (IN after) (S (VP (VBG entering) (NP (DT the) (NN conference) (NN room))))))))))))) (, ,) (CC but) (S (NP (PRP he)) (VP (VBD did) (RB not) (VP (VB hear) (SBAR (WHNP (WP what)) (S (NP (PRP they)) (VP (VBD said))))))) (. .)))
The aide did not hear what was said, however others in their entourage may have heard something more.
( ( ( ( ( ( The aide ) ( ( did not ) ( hear ( what ( was said ) ) ) ) ) , ) however ) ( ( others ( in ( their entourage ) ) ) ( may ( have ( ( heard something ) more ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NN aide)) (VP (VBD did) (RB not) (VP (VB hear) (SBAR (WHNP (WP what)) (S (VP (VBD was) (VP (VBN said)))))))) (, ,) (ADVP (RB however)) (S (NP (NP (NNS others)) (PP (IN in) (NP (PRP$ their) (NN entourage)))) (VP (MD may) (VP (VB have) (VP (VBN heard) (NP (NN something)) (ADVP (RBR more)))))) (. .)))