Who? asked Tommy.
( ( ( Who ? ) ( asked Tommy ) ) . )
(ROOT (S (S (FRAG (WHNP (WP Who)) (. ?)) (NP (JJ asked)) (VP (VBZ Tommy))) (. .)))
Tommy asked about the location.
( Tommy ( ( asked ( about ( the location ) ) ) . ) )
(ROOT (S (NP (NNP Tommy)) (VP (VBD asked) (PP (IN about) (NP (DT the) (NN location)))) (. .)))