Premise: Serena Williams . Her record of 39 Grand Slam titles puts her third on the all-time list and second in the open era : 23 in singles , 14 in women 's doubles , and 2 in mixed doubles . She has won an all-time record of 13 Grand Slam singles titles on hardcourt .
Hypothesis: Serena Williams is a four time Grand Slam winner.
Label: CONTRADICTION