( ( ( The ( only ( innate behaviors ) ) ) ( in humans ) ) ( ( are reflexes ) . ) )
(ROOT (S (NP (NP (DT The) (RB only) (JJ innate) (NNS behaviors)) (PP (IN in) (NP (NNS humans)))) (VP (VBP are) (ADJP (JJ reflexes))) (. .)))
The only  innate behaviors in humans are reflexes.
(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))))) (. .)))