And who told you that story?
( And ( who ( ( told ( you ( that story ) ) ) ? ) ) )
(ROOT (SBARQ (CC And) (WHNP (WP who)) (SQ (VP (VBD told) (S (NP (PRP you)) (NP (DT that) (NN story))))) (. ?)))
Did you hear the story from a companion? 
( ( ( Did you ) ( ( hear ( the story ) ) ( from ( a companion ) ) ) ) ? )
(ROOT (SQ (VBD Did) (NP (PRP you)) (VP (VB hear) (NP (DT the) (NN story)) (PP (IN from) (NP (DT a) (NN companion)))) (. ?)))