Question: When was the winner of 1983 World's Strongest Man born? 

Context paragraphs:
Geoff Capes: Geoffrey Lewis Capes (born 23 August 1949) is a British former shot putter, strongman and professional Highland Games competitor.

All-American Strongman Challenge: The All-American Strongman Challenge is a leading competition in strength athletics that takes place within the annual Californian FitExpo.  Although North America has a number of prestigious strongman events determining the "Strongest Man in America", the "Strongest Man in Canada" and the "Strongest Man in North America", the All-American Strongman Challenge has added kudos because it is open to entrants from overseas with the potential to bring in leading international competitors as well.  It is notable for the calibre of entrants it has attracted, with many World's Strongest Man finalists being represented.

1980 World's Strongest Man: The 1980 World's Strongest Man was the fourth edition of World's Strongest Man and was won by Bill Kazmaier from the United States.  It was his first title after finishing third the previous year.  Lars Hedlund from Sweden finished second after finishing second the previous year, and Geoff Capes from the United Kingdom finished third.  Defending champion Don Reinhoudt withdrew from the competition due to injury; this would be his final World's Strongest Man.

Ben Kelsey (strongman): Ben Kelsey (born 23 September 1984) is a British strongman competitor, notable for having won the England's Strongest Man title, the title of World's Strongest Man Under 105 kg and having competed at the World's Strongest Man.

2013 World's Strongest Man: The 2013 World's Strongest Man was the 36th edition of World's Strongest Man.  The event was held in Haitang Bay, Sanya, China, the same host city as the 2006 World's Strongest Man contest.  The qualifying heats were held from August 17–20 and the finals on Aug. 23 & 24.  The event was sponsored by the Commerce Casino and will be broadcast in the United States on the CBS Sports Network.  Brian Shaw from the United States placed first, winning his second WSM title after winning in 2011.  Zydrunas Savickas from Lithuania was second after finishing 1st the year before, and Hafþór Júlíus Björnsson from Iceland was third for the second year in a row.

1983 World's Strongest Man: The 1983 World's Strongest Man was the seventh edition of World's Strongest Man and was won by Geoff Capes from the United Kingdom.  It was his first title.  Jón Páll Sigmarsson from the Iceland finished second, and Simon Wulfse from the Netherlands third.  The winner of the three previous competetitions, Bill Kazmaier, was not invited to compete again in this year.  The contest was held at Christchurch, New Zealand.  The title of the competition, formerly "World's Strongest Men", was changed to the current title for this competition.

Eddie Hall: Edward Hall (born 15 January 1988) is an English professional strongman, notable for being the current World's Strongest Man and the only man to deadlift 500 kg under strongman rules.  He has also won on multiple occasions both the UK's Strongest Man and England's Strongest Man titles.  He is the 2017 World's Strongest Man and the current world record holder in the deadlift with straps.

Robert Oberst: Robert Oberst (born December 20, 1984) is an American professional strongman who was awarded his "Pro Card" at the 2012 Dallas Europa Amateur Strongman Competition.  He is a yearly competitor of the World's Strongest Man including the 2013 World's Strongest Man, 2014 World's Strongest Man, 2015 World's Strongest Man and the 2016 World's Strongest Man competitions.

2014 World's Strongest Man: The 2014 World's Strongest Man was the 37th edition of World's Strongest Man.  The event was held at the Commerce Casino in Los Angeles, California, the same host city as the 2012 World's Strongest Man contest.  The qualifying heats were held from March 22–25 and the finals on March 28 & 29.  Unlike previous years when 10 athletes qualified for the finals, this year there were 12 qualifying spots.  The top 2 from each heat qualified, as well as the 2 highest scoring 3rd place athletes from all 5 heats.  The event was sponsored by the Commerce Casino and will begin broadcasting in the United States on the CBS Sports Network from July 4-August 13, 2014.  Zydrunas Savickas from Lithuania finished in first place, this was his fourth WSM title.  Hafþór Júlíus Björnsson from Iceland finished in second place, and Brian Shaw from the United States came in third.

Europe's Strongest Man: Europe's Strongest Man is an annual strength athletics competition which began in 1980.  The event is held in various locations throughout Europe, and features exclusively European strongman competitors.  Mariusz Pudzianowski currently holds the record for most wins with 6 titles.  Zydrunas Savickas, Geoff Capes, Riku Kiri and Hafþór Júlíus Björnsson each hold 3 titles.  As of 2010, the Europe's Strongest Man contest has become a part of the Giants Live season of annual grand prix events.  The contest serves as a qualifying event for the World's Strongest Man contest, with the top 3 placings qualifying for that year's WSM contest.

Supporting paragraphs: 1983 World's Strongest Man Geoff Capes
Answer: 23 August 1949