(S (S (BASENP (DT The) (NN episode)) (VP (VBD revolved) (PP (IN around) (NP (BASENP (DT a) (JJ big) (NN scheme)) (SBAR (S (NP (BASENP (NNP Peter) (NNP Griffin)) (PRN (COMMA ,) (NP (BASENP (DT the) (JJ main) (NN character)) (PP (IN of) (BASENP (DT the) (NN series)))) (COMMA ,))) (VP (VBD conjured)))))))) (PERIOD .))