(S (S (S (BASENP (JJ Brown) (NNS bears)) (VP (VBP are) (VP (ADVP (RB no) (RBR longer)) (VP (VBN found) (PP (IN on) (BASENP (DT the) (JJ British) (NNS Isles))))))) (CONJP (COMMA ,) (CC and)) (S (BASENP (PRP it)) (VP (VBD had) (VP (VBN been) (VP (VBN thought) (SBAR (IN that) (S (BASENP (JJ polar) (NNS bears)) (VP (VP (VBD interbred) (ADVP (RBR more) (RB recently))) (PP (IN with) (NP (BASENP (JJ brown) (NNS bears)) (VP (VBG living) (PP (IN around) (BASENP (NNP Alaska)))))))))))))) (PERIOD .))