( ( Describing ( ( human behavior ) ( is sociology ) ) ) ; )
(ROOT (S (VP (VBG Describing) (SBAR (S (NP (JJ human) (NN behavior)) (VP (VBZ is) (NP (NN sociology)))))) (: ;)))
Describing human behavior is sociology;
(ROOT (S (NP (JJ Learned) (NN behavior)) (VP (VP (VBZ occurs) (ADVP (RB only)) (PP (IN after) (NP (NN experience) (CC or) (NN practice)))) (CC and) (VP (VBZ describes) (NP (RBS most) (JJ human) (NNS behaviors)))) (. .)))