(S (S (BASENP (NN Fighting) (NNS words)) (VP (VBD were) (VP (VP (VBN exchanged) (PP (IN in) (NP (BASENP (DT the) (JJ Australian) (NNP House)) (PP (IN of) (BASENP (NNPS Representatives)))))) (PP (IN over) (NP (BASENP (DT the) (NN matter)) (PP (IN of) (NP (BASENP (DT the) (NN division)) (PP (IN of) (NP (BASENP (NNP Medicare) (NN safety) (NN net) (NNS payments)) (PP (IN per) (BASENP (NN electorate)))))))))))) (PERIOD .))