What writers?
( What ( writers ? ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VP (VBZ writers))) (. ?)))
Was one of the writers C.S. Lewis?
( ( ( Was one ) ( of ( the ( writers ( C.S. Lewis ) ) ) ) ) ? )
(ROOT (SQ (VBD Was) (NP (PRP one)) (PP (IN of) (NP (DT the) (NNP writers) (NNP C.S.) (NNP Lewis))) (. ?)))