Premise: The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . Martina Hingis ( born 30 September 1980 ) is a Czechoslovak-born Swiss professional tennis player who spent a total of 209 weeks as the singles world No. 1 . An Olympic medal is awarded to successful competitors at one of the Olympic Games .
Hypothesis: Martina Hingis is a person.
Label: ENTAILMENT