Premise: The 2006 Challenge Bell was a tennis tournament played on indoor carpet courts at the PEPS de l'Université Laval in Quebec City in Canada that was part of Tier III of the 2006 WTA Tour. It was the 14th edition of the Challenge Bell, and was held from October 30 through November 5, 2006. Marion Bartoli won the singles title.
Hypothesis: the courts were made of carpet