Premise: Tennis is a racket sport that can be played individually against a single opponent ( singles ) or between two teams of two players each ( doubles ) . Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent 's court . Tennis is an Olympic sport and is played at all levels of society and at all ages . The sport can be played by anyone who can hold a racket , including wheelchair users . During most of the 19th century , in fact , the term `` tennis '' referred to real tennis , not lawn tennis : for example , in Disraeli 's novel Sybil ( 1845 ) , Lord Eugene De Vere announces that he will `` go down to Hampton Court and play tennis . ''
Hypothesis: There is a sport called tennis.
Label: ENTAILMENT