Question: Alexis Sánchez specialized in the event that is included in the athletics program at what premier event?

Context paragraphs:
Athletics at the Summer Olympics: Athletics has been contested at every Summer Olympics since the birth of the modern Olympic movement at the 1896 Summer Olympics.  The athletics program traces its earliest roots to events used in the ancient Greek Olympics.  The modern program includes track and field events, road running events, and racewalking events.  Cross country running was also on the program in earlier editions but it was dropped after the 1924 Summer Olympics.

Guelph Athletics: Guelph Athletics is the athletic department at the University of Guelph, located in Guelph, Ontario.  The university athletics program is sponsored by Russell Athletics.  Many of the athletic programs are associated with Ontario University Athletics and Canadian Interuniversity Sport, to compete for both provincial and national championships.  The university teams are called the Guelph Gryphons.

2015 FA Cup Final: The 2015 FA Cup Final was the 134th final of the FA Cup, the world's oldest football cup competition.  The match was contested by Arsenal and Aston Villa at Wembley Stadium in London.  The match was played on 30 May 2015 and was the final match of the competition.  Arsenal won the match 4–0 with goals from Theo Walcott, Alexis Sánchez, Per Mertesacker and Olivier Giroud, for a record 12th title.  This was the sixth FA Cup win for manager Arsène Wenger, putting him in joint-first place for wins with George Ramsay.

110 metres hurdles: The 110 metres hurdles, or 110-meter hurdles, is a hurdling track and field event for men.  It is included in the athletics programme at the Summer Olympic Games.  The female counterpart is the 100 metres hurdles.  As part of a racing event, ten hurdles of 1.067 metres (3.5 ft or 42 inches) in height are evenly spaced along a straight course of 110 metres.  They are positioned so that they will fall over if bumped into by the runner.  Fallen hurdles do not carry a fixed time penalty for the runners, but they have a significant pull-over weight which slows down the run.  Like the 100 metres sprint, the 110 metres hurdles begins in the starting blocks.

Alexis Sánchez (athlete): Alexis Sánchez González (born 13 April 1971) is a retired Spanish athlete who specialised in the 110 metres hurdles and 400 metres hurdles.  Before Spain he represented his native Cuba, competing at the 1991 World Championships where he reached the semifinals.  He was also the 110 metres hurdles World Junior Championships silver medalist in 1990.

2012 Qatar Total Open: The 2012 Qatar Total Open was a professional women's tennis tournament played on hard courts.  It was the 10th edition of the event.  It took place at International Tennis and Squash complex in Doha, Qatar between 13 and 19 February 2012.  It was upgraded from a Premier event to a Premier 5 event.  Victoria Azarenka won the singles title.

2012 Qatar Total Open – Singles: The 2012 Qatar Total Open was a professional women's tennis tournament played on hard courts.  It was the 10th edition of the event.  It took place at International Tennis and Squash complex in Doha, Qatar between 13 and 19 February 2012.  It was upgraded from a Premier event to a Premier 5 event.  Victoria Azarenka won the title after defeating Samantha Stosur 6–1, 6–2.  Vera Zvonareva was the defending champion, but retired during her second round match against Monica Niculescu.

Nike Mercurial Vapor: The Mercurial Vapor is a football boot manufactured by Nike.  The boot is known for being lightweight.  Because of this, the boot is endorsed by many players for whom speed is part of their game, notably wingers or strikers, such as Cristiano Ronaldo, Franck Ribéry, Luiz Adriano, Zlatan Ibrahimović, Didier Drogba, Jesús Navas, Luka Modrić, Arturo Vidal, Douglas Costa, Xherdan Shaqiri, Raheem Sterling, Stephan El Shaarawy, Eden Hazard, Alexis Sánchez, Carlos Bacca and Philippe Coutinho, among others.

Alex Sánchez (outfielder): Alexis Sánchez, (born August 26, 1976), is a former Major League Baseball outfielder.  He played for the Milwaukee Brewers (2001–2003), the Detroit Tigers (2003–2005), the Tampa Bay Devil Rays (2005), and the San Francisco Giants (2005).

List of international goals scored by Alexis Sánchez: List of international goals scored by Alexis Sánchez

Supporting paragraphs: Alexis Sánchez (athlete) 110 metres hurdles
Answer: Summer Olympic Games