what 's missing in murder by numbers 
(ROOT (SBAR (WHNP (WP what)) (S (VP (VBZ 's) (ADJP (VBG missing) (PP (IN in) (NP (NN murder)))) (PP (IN by) (NP (NNS numbers)))))))
(ROOT (SBAR (WHNP (WP )) (S (VP (VBZ ) (ADJP (VBG ) (PP (IN ) (NP (NN )))) (PP (IN ) (NP (NNS )))))))