Premise: The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . Martina Hingis . She has won five Grand Slam singles titles , twelve Grand Slam women 's doubles titles , winning a calendar-year doubles Grand Slam in 1998 , and five Grand Slam mixed doubles titles ; for a combined total of twenty-two major titles . In July 2013 , Hingis came out of retirement to play the North American hard-court season , partnering Daniela Hantuchová . During her comeback , Hingis also won all four Grand Slam mixed doubles tournaments alongside Leander Paes and a silver medal partnering Timea Bacsinszky at the 2016 Summer Olympics in Rio de Janeiro .
Hypothesis: Martina Hingis played in North America.
Label: ENTAILMENT