Premise: Jamie Murray . He is a three-time Grand Slam doubles winner and a Davis Cup champion , currently the world No. 5 doubles player , and a former doubles world No. 1 . Murray was in the Great Britain team that won the Davis Cup in 2015 , the nation 's first success in the tournament for 79 years .
Hypothesis: Jamie Murray is a champion of the Davis Cup.
Label: ENTAILMENT