(S (S (ADVP (RB However)) (COMMA ,) (S (PP (JJ due) (PP (TO to) (BASENP (JJ mental) (NN illness)))) (COMMA ,) (S (BASENP (PRP he)) (VP (VBD was) (VP (VBN forced) (S (VP (TO to) (VP (VP (VB leave) (BASENP (DT the) (NN band))) (PP (IN after) (S (VP (VBG recording) (NP (BASENP (QP (RB only) (NN one)) (NN album)) (COMMA ,) (NP (BASENP (DT The) (NN Piper)) (PP (IN at) (NP (BASENP (DT the) (NNS Gates)) (PP (IN of) (BASENP (NN Dawn)))))))))))))))))) (PERIOD .))