Question: The person who finished third in the 1984 World's Strongest Man was born on what date?

full_context: Document 1: 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.
Document 2: 2012 World's Strongest Man: The 2012 World's Strongest Man was the 35th edition of World's Strongest Man. The event was held on the grounds of the Commerce Casino in Los Angeles, California, US. The event was sponsored by MET-Rx. The qualifying heats were held from September 24–27, and the finals took place Sept. 30 & Oct. 1, 2012. The winner was Žydrūnas Savickas, it was his third WSM title. Vytautas Lalas of Lithuania was second, and Iceland's Hafþór Júlíus Björnsson was third.
Document 3: 2004 World's Strongest Man: The 2004 World's Strongest Man was the 27th edition of World's Strongest Man and was won by Vasyl Virastyuk from Ukraine. It was his first title after finishing third the previous year. Zydrunas Savickas from Lithuania finished second for the third year in a row. Originally Mariusz Pudzianowski from Poland finished third, but was later disqualified after testing positive for a banned substance, thus third place was given to Magnus Samuelsson from Sweden. The contest was held in Nassau, Bahamas. The qualifying heats saw a major format change, going from the traditional 5-6 man heats with the top 2 going to the finals. This year's format was a 12-man round-robin competition taking place over 5 days, with the top six going onto the finals.
Document 4: 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.
Document 5: 1986 World's Strongest Man: The 1986 World's Strongest Man was the tenth edition of World's Strongest Man and was won by Jón Páll Sigmarsson from Iceland. It was his second title after finishing second the previous year. 1983 and 1985 champion Geoff Capes from the United Kingdom finished second and, Ab Wolders from the Netherlands finished third. The contest was held at Nice, France.
Document 6: 1981 World's Strongest Man: The 1981 World's Strongest Man was the fifth edition of World's Strongest Man and was won by Bill Kazmaier from the United States. It was his second title. Geoff Capes from the United Kingdom finished second after finishing third the previous year, and Dave Waddington from the United States finished third. The contest was held at Magic Mountain, California.
Document 7: 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.
Document 8: 1985 World's Strongest Man: The 1985 World's Strongest Man was the ninth edition of World's Strongest Man and was won by Geoff Capes from the United Kingdom. It was his second title after finishing third the previous year. 1984 champion Jón Páll Sigmarsson from Iceland finished second and Cees de Vreugd from the Netherlands finished third. The contest was held at Cascais, Portugal.
Document 9: 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.
Document 10: Geoff Capes: Geoffrey Lewis Capes (born 23 August 1949) is a British former shot putter, strongman and professional Highland Games competitor.
Document 11: 1984 World's Strongest Man: The 1984 World's Strongest Man was the eighth edition of World's Strongest Man and was won by Jón Páll Sigmarsson from Iceland. It was his first title after finishing second the previous year. Ab Wolders from the Netherlands finished second and, 1983 champion Geoff Capes from the United Kingdom finished third. The contest was held at Mora, Sweden.
Document 12: 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.
Document 13: 1979 World's Strongest Man: The 1979 World's Strongest Man was the third edition of World's Strongest Man and was won by Don Reinhoudt from the United States. It was his first title after finishing second the previous year. Lars Hedlund from Sweden finished second after finishing third the previous year, and Bill Kazmaier also from the United States finished third. The contest was held at the Universal Studios, California.
Document 14: 2007 World's Strongest Man: The 2007 World's Strongest Man was the 30th edition of World's Strongest Man and was won by Mariusz Pudzianowski from Poland. It was his fourth and record tying title. Sebastian Wenta from Poland finished second, and Terry Hollands from the United Kingdom finished third after finishing seventh the previous year. 2006 champion Phil Pfister from the United States finished fourth. The contest was held in Anaheim, California.
Document 15: 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.
ground_truth: 23 August 1949