Question: The 2015 Tour of Oman was the sixth edition of the Tour of Oman cycling stage race, Chris Froome, the defending champion from 2013 and 2014, a British road racing cyclist for which organization?

Context articles: 2016 Tour de Romandie
2015 Tour of Oman
2011 Tour of Oman
2014 Tour of Oman
2017 Herald Sun Tour
2013 Tour of Oman
2010 Tour of Oman
2012 Tour of Oman
2016 Tour of Oman
Chris Froome

The 2016 Tour de Romandie was a road cycling stage race that took place in the Romandie region of Switzerland between 26 April and 1 May 2016.
 It was the 70th edition of the Tour de Romandie cycling stage race and the 14th event in the 2016 UCI World Tour.
 The defending champion was Team Katusha 's Ilnur Zakarin.
The 2015 Tour of Oman was the sixth edition of the Tour of Oman cycling stage race.
 It was rated as a 2.
HC event on the UCI Asia Tour, and was held from 17 to 22 February 2015, in Oman.
 The race was organised by the municipality of Muscat, in collaboration with ASO (the organisers of the Tour de France) and Paumer.
 Chris Froome, the defending champion from 2013 and 2014, was not present to defend his title.
The 2011 Tour of Oman is the second edition of the Tour of Oman cycling stage race.
 It is rated as a 2.1 event on the UCI Asia Tour, and held from 15 February to 20 February 2011, in Oman.
The 2014 Tour of Oman was the fifth edition of the Tour of Oman cycling stage race.
 It was rated as a 2.
HC event on the UCI Asia Tour, and was held from 18 to 23 February 2014, in Oman.
The 2017 Jayco Herald Sun Tour was a road cycling stage race that took place in Victoria, Australia, between 1 and 5 February 2017.
 The race was rated as a 2.1 event as part of the 2017 UCI Oceania Tour.
 The race included five stages: the first was a 2.1 km prologue individual time trial stage, with the remaining four stages being road stages.
 The champion of the 2016 Herald Sun Tour, Chris Froome attempted to defend his title.
The 2013 Tour of Oman was the fourth edition of the Tour of Oman cycling stage race.
 It was rated as a 2.
HC event on the UCI Asia Tour, and was held from 11 to 16 February 2013, in Oman.
The 2010 Tour of Oman was the first edition of the Tour of Oman cycling stage race.
 It was rated as a 2.1 event on the UCI Asia Tour, and held from 14 February to 19 February 2010, in Oman.
 The race was won by Fabian Cancellara of Team Saxo Bank .
The 2012 Tour of Oman was the third edition of the Tour of Oman cycling stage race.
 It was rated as a 2.1 event on the UCI Asia Tour, and was held from 14 to 19 February 2012, in Oman.
The 2016 Tour of Oman was a road cycling stage race that took place between 16 and 21 February 2016 in Oman.
 It was the seventh edition of the Tour of Oman and is rated as a 2.
HC race as part of the 2016 UCI Asia Tour.
 The previous year's champion, Rafael Valls, was not present to defend his title.
Christopher Clive Froome, {'1': ", '2': ", '3': ", '4': "} (born 20 May 1985) is a British road racing cyclist for UCI ProTeam Team Sky .
 He is the reigning Tour de France and Vuelta a España champion and one of the most successful riders in the history of the Tour, having won it four times – in 2013, 2015, 2016 and 2017.