Federer–Murray rivalry
{'<entity_0>': 'Federer–Murray rivalry', '<entity_1>': 'tennis'}
[['Federer–Murray rivalry', 'sport', 'tennis']]
Since about 2011, the term "<entity_0>", while used previously, became popular with the media and in <entity_1> literature. The <entity_0> have been a critical part of what has, since 2006, often been labelled a new "Golden Era" in <entity_1>; that term is also applied to the mid-1970s to 1980s, and the 1920s to the 1930s. The presence of the <entity_0> is generally seen to have had a positive impact on <entity_1>, making the sport more exciting and in turn attracting more attention. Separately, it has been claimed that the current era in <entity_1> should be seen as having a "Big Five", with Juan Martín del Potro, Marin Čilić, and Stan Wawrinka suggested as expansions to the <entity_0>. Some, including Steffi Graf and John McEnroe, believe the presence of the <entity_0> has coincided with that of a new "Golden Era" in men's <entity_1> since 2008, wherein depth, athleticism and quality have never been better.
['rivalry']