The paper has sparked a debate over what, if anything, the results mean for human language.

The death sparked a debate over security in the schools.

"I believe it will spark a national debate," he said of the series.

The bill has sparked a debate about freedom of speech.

The film sparked a debate even before it was published.

There's nothing like a good list to spark a little debate among music fans.

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

Quite to the contrary, their first question sparked a general debate.

The case continued to spark debate among politicians and some religious leaders.

These proposals sparked a debate on the 29th June 2010.