(S (S (BASENP (DT The) (NN duo)) (VP (VBD escaped) (PP (IN in) (NP (BASENP (DT a) (JJ blue) (NNP BMW)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (BASENP (PRP they)) (VP (ADVP (RB soon)) (VP (VBD abandoned) (PP (IN for) (BASENP (DT a) (NNP Mercedes))))))))))) (PERIOD .))