What are those stories?
( What ( ( are ( those stories ) ) ? ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VBP are) (NP (DT those) (NNS stories))) (. ?)))
What are these textbooks?
( What ( ( are ( these textbooks ) ) ? ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VBP are) (NP (DT these) (NN textbooks))) (. ?)))