claim: The winner of the 2011 Rogers Cup – Women's Singles is more accomplished than Mariaan de Swardt in her tennis career because she was the world No. 1 for the first time.
supporting_facts.key: Serena Williams
supporting_facts.key: Serena Williams
supporting_facts.key: Mariaan de Swardt
supporting_facts.key: Mariaan de Swardt
supporting_facts.key: 2011 Rogers Cup – Women's Singles