11.   Giuliani said no one who is truly needy will be removed, but welfare advocates challenged that assertion.

12.   In general postmodernists challenge assertions that truth and ethical judgment have any objective validity.

13.   Indeed, both Isikoff and Bakaly challenged several assertions made by the limousine driver.

14.   Midwestern utilities challenge that assertion.

15.   Nobody else saw that moose, but there was no courage to challenge the assertion.

16.   North Carolina officials have said they will challenge the assertion that McCarver is mentally retarded.

17.   On another prosecution point, Ruff challenged assertions that Clinton never told Lewinsky to lie because she knew that the president expected her to deny their relationship under oath.

18.   Police officials challenge the assertion that the four officers were to blame for the shooting.

19.   Representative Barney Frank, a Massachusetts Democrat who is one of two openly gay members of Congress, challenged the assertion that individuals choose their sexual orientation.

20.   Ruff challenged the assertion by House Republicans that Clinton must be removed because he is damaging the presidency.