Premise: Serena Williams . She is the most recent female player to have held all four Grand Slam singles titles simultaneously ( 2002 -- 03 and 2014 -- 15 ) and the third player to achieve this record twice after Rod Laver and Steffi Graf . She is also the only tennis player to have won 10 Grand Slam singles titles in two separate decades .
Hypothesis: Serena Williams is an athlete.
Label: ENTAILMENT