11.   But a proposal to halt future expansion is sure to spark spirited debate.

12.   But it would put his accomplishment in position to spark debate over topics that have no definitive answers.

13.   But the campaign has raised questions and sparked debate whether air power alone can win a war without the use of ground troops.

14.   But the revival has sparked a debate on whether brownstone should be used at all.

15.   But the shooting did not spark a debate over guns, which are ubiquitous here.

16.   But the defense review will spark more debate than just the question of which bases to close.

17.   But the number of cell lines is certain to spark debate.

18.   But this latest controversy is sure to spark debates from the Colorado and Oregon coaching offices to coffee shops and offices around the country.

19.   Computers, CD-Roms and the Internet have undercut or rewritten all the old definitions of book publishing, sparking a debate over electronic rights.

20.   Debate was sparked over whether items such as clothing, napkins, posters or hats would be considered a flag.