Premise: Venus Ebony Starr Williams ( born June 17 , 1980 ) is an American professional tennis player who is generally regarded as one of the all-time greats of women 's tennis and who , along with younger sister Serena Williams , is credited with ushering in a new era of power and athleticism on the women 's professional tennis tour . Ranked World No. 11 in singles as of January 28 , 2017 , Williams has been ranked World No. 1 by the Women 's Tennis Association on three occasions , for a total of 11 weeks . From the 2000 Wimbledon Championships to the 2001 US Open , Williams won four of the six Grand Slam singles tournaments held . She is the only tennis player to have won a medal at four separate Olympic Games .
Hypothesis: Venus Williams is incapable of being a tennis player.
Label: CONTRADICTION