Premise: Grand Slam (tennis) . The Grand Slam itinerary consists of the Australian Open in mid January , the French Open in May and June , Wimbledon in June and July , and the US Open in August and September . Steffi Graf . Furthermore , she is the only tennis player to have won each Grand Slam event at least four times .
Hypothesis: Steffi Graf competed in multiple professional tennis competitions like the Australian Open, the US Open, and French Open.
Label: ENTAILMENT