( ( Innate behavior ) . )
(ROOT (S (VP (VB Innate) (NP (NN behavior))) (. .)))
Innate behavior .
(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))))) (. .)))