(S (S (NP (BASENP (DT The) (NNS scientists) (POS ')) (NNS results)) (VP (VBD showed) (SBAR (IN that) (S (NP (BASENP (DT the) (JJ anterior) (JJ preoptic) (NN area)) (PP (IN of) (NP (DT the) (NP (BASENP (NNS rams) (POS ')) (NN hypothalamus))))) (VP (VBD was) (ADJP (ADJP (ADJP (BASENP (NN 50) (NN percent)) (JJR smaller)) (PP (IN in) (BASENP (JJ male-oriented) (NNS rams)))) (PP (IN as) (ADJP (JJ opposed) (PP (TO to) (BASENP (ADJP (JJ female) (JJ oriented)) (NNS rams))))))))))) (PERIOD .))