21.   Disputes on this fundamental constitutional question spark fiery debates in Scotland and Wales and often violence in Northern Ireland.

22.   During its run in Europe, the film sparked fierce debate.

23.   He sparked water cooler debates.

24.   Her Jubilee anniversary once again will spark debate about whether the monarchy is out of date.

25.   His behavior sparked a debate over whether his actions are appropriate for an elected official and high-profile role model.

26.   In a ruling certain to spark lively debate on Burden of Proof, the Court of Arbitration for Sport overturned the IOC decision.

27.   In one finding certain to spark debate among presidential scholars, the report said President Clinton encouraged Roger Clinton to cash in before his term expired.

28.   Industry officials say the request has sparked debate over everything from cost to technical feasibility to the implications for the Internet itself.

29.   Instead he spotted two large, vivid birds and sparked a debate among birders over whether the ivory-billed woodpecker is indeed extinct.

30.   It also sparked a debate between those who see Brock as a savvy careerist and those who say his epiphany in genuine.