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)))))) (. ?)))
Was Lewis' death a suicide, as has been said by historians?
( ( ( ( Was ( Lewis ' ) ) death ) ( ( ( a suicide ) , ) ( as ( has ( been ( said ( by historians ) ) ) ) ) ) ) ? )
(ROOT (NP (NP (NP (NNP Was) (NNP Lewis) (POS ')) (NN death)) (NP (NP (DT a) (NN suicide)) (, ,) (SBAR (IN as) (S (VP (VBZ has) (VP (VBN been) (VP (VBN said) (PP (IN by) (NP (NNS historians))))))))) (. ?)))