(S (S (S (BASENP (JJ Official) (NNP Winter) (NNP Time)) (VP (VBZ is) (VP (VBN adopted) (PP (IN in) (NP (BASENP (DT the) (JJ last) (NNP Sunday)) (PP (IN of) (BASENP (NNP October)))))))) (CC and) (S (BASENP (DT the) (NNP Summer) (NNP Time)) (VP (PP (IN in) (NP (BASENP (JJ last) (NNP Sunday)) (PP (IN of) (BASENP (NNP March)))))))) (PERIOD .))