( Learning ( ( is ( ( one ( ( very complex ) ( innate behavior ) ) ) ( of ( human brains ) ) ) ) . ) )
(ROOT (S (NP (NNP Learning)) (VP (VBZ is) (NP (NP (CD one) (ADJP (RB very) (JJ complex)) (JJ innate) (NN behavior)) (PP (IN of) (NP (JJ human) (NNS brains))))) (. .)))
Learning is one very complex innate behavior of human brains.
(ROOT (S (NP (NNP Reflex) (NNS behaviors)) (VP (VBP are) (NP (NP (DT the) (RB only) (JJ innate) (NNS behaviors)) (PP (IN in) (NP (NNS humans))))) (. .)))