what gives human nature its unique feel 
(ROOT (SBAR (WHNP (WP what)) (S (VP (VBZ gives) (NP (JJ human) (NN nature)) (NP (PRP$ its) (JJ unique) (NN feel))))))
(ROOT (SBAR (WHNP (WP )) (S (VP (VBZ ) (NP (JJ ) (NN )) (NP (PRP$ ) (JJ ) (NN ))))))