Question: At the 2008 french open Katarina Srebotnik defeated an American professional tennis player who was born on what date?
{'answer': 'September 26, 1981', 'supporting_facts': [["2008 French Open – Women's Singles", 0], ["2008 French Open – Women's Singles", 1], ["2008 French Open – Women's Singles", 2], ['Serena Williams', 0]]}