However, a former parliamentary watchdog said he had a duty to set out his exact interests in it.

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The BBC had a duty to set the "gold standard" in news reporting, accuracy, impartiality and creating better understanding, he said.

BBC: chairman Michael Grade

These, like Mr Ozawa's, dated to before 1986 but, the opposition argued, it was a lawmaker's duty to set a good example, even if payment was not obligatory.

ECONOMIST: Japan