(S (S (NP (BASENP (DT A) (JJ main) (NN belt) (NN asteroid)) (PRN (COMMA ,) (BASENP (NNP No.) (NN 274301)) (COMMA ,))) (VP (VBZ has) (VP (VBN been) (VP (VBN named) (PP (IN after) (NP (BASENP (NNP Wikipedia)) (COMMA ,) (BASENP (DT a) (JJ free) (NN encyclopedia)))))))) (PERIOD .))