Premise: Miroslava `` Mirka '' Federer ( born Miroslava Vavrincová on 1 April 1978 , later Miroslava Vavrinec ) is a Slovak-born Swiss former professional tennis player . Tennis is a racket sport that can be played individually against a single opponent ( singles ) or between two teams of two players each ( doubles ) .
Hypothesis: Mirka Federer was a player of a racket sport and she is Swiss.
Label: ENTAILMENT