( ( ( The ( simplest form ) ) ( of ( innate ( behavior 24 ) ) ) ) . )
(ROOT (NP (NP (DT The) (JJS simplest) (NN form)) (PP (IN of) (NP (NN innate) (NN behavior) (CD 24))) (. .)))
The simplest form of innate behavior 24.
(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))))) (. .)))