(S (S (PP (IN During) (BASENP (NN 1967-1968))) (COMMA ,) (S (BASENP (NNP Syd) (NNP Barrett)) (VP (VBD was) (VP (VBN considered) (S (VP (TO to) (VP (VB be) (NP (NP (DT the) (NP (BASENP (JJ main) (NN member)) (CC and) (BASENP (NN songwriter)))) (PP (IN of) (BASENP (NNP Pink) (NNP Floyd))))))))))) (PERIOD .))