Did Meriwether Lewis really commit suicide, as historians claim?
( ( ( Did ( Meriwether Lewis ) ) ( really ( commit ( ( suicide , ) ( as ( historians claim ) ) ) ) ) ) ? )
(ROOT (SQ (VBD Did) (NP (NNP Meriwether) (NNP Lewis)) (VP (ADVP (RB really)) (VB commit) (NP (NP (NN suicide)) (, ,) (SBAR (IN as) (S (NP (NNS historians)) (VP (VBP claim)))))) (. ?)))
There is evidence to suggest that Lewis was killed by someone else.
( There ( ( is ( evidence ( to ( suggest ( that ( Lewis ( was ( killed ( by ( someone else ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (NP (NN evidence) (S (VP (TO to) (VP (VB suggest) (SBAR (IN that) (S (NP (NNP Lewis)) (VP (VBD was) (VP (VBN killed) (PP (IN by) (NP (NN someone) (RB else)))))))))))) (. .)))