what makes it worth a recommendation 
(ROOT (SBAR (WHNP (WP what)) (S (VP (VBZ makes) (S (NP (PRP it)) (ADJP (JJ worth) (NP (DT a) (NN recommendation))))))))
(ROOT (SBAR (WHNP (WP )) (S (VP (VBZ ) (S (NP (PRP )) (ADJP (JJ ) (NP (DT ) (NN ))))))))