(S (S (PP (IN In) (BASENP (NN addition))) (S (BASENP (NN 10,000) (NNS people)) (VP (VP (VBD marched) (PP (IN past) (NP (NP (BASENP (NNP United) (NNP Kingdom) (NNP Prime) (NNP Minister) (NNP Gordon) (NNP Brown) (POS 's)) (NN residence)) (PP (IN in) (BASENP (NNP London)))))) (COMMA ,) (S (VP (VP (VBG hurling) (NP (BASENP (NNS hundreds)) (PP (IN of) (BASENP (NNS shoes))))) (PP (IN at) (BASENP (PRPD his) (NN home)))))))) (PERIOD .))