Context: Death from laughter is a rare form of death, usually resulting from cardiac arrest or asphyxiation, caused by a fit of laughter. Instances of death by laughter have been recorded from the times of ancient Greece to the modern day.
 Question: can you have a heart attack from laughing Context: Although Concorde and the Tu-144 were the first aircraft to carry commercial passengers at supersonic speeds, they were not the first or only commercial airliners to break the sound barrier. On 21 August 1961, a Douglas DC-8 broke the sound barrier at Mach 1.012 or 1,240 km/h (776.2 mph) while in a controlled dive through 41,088 feet (12,510 m). The purpose of the flight was to collect data on a new leading-edge design for the wing. A China Airlines 747 may have broken the sound barrier in an unplanned descent from 41,000 ft (12,500 m) to 9,500 ft (2,900 m) after an in-flight upset on 19 February 1985. It also reached over 5g.
 Question: can a commercial jet break the sound barrier Context: Jan Brady - née Jan Martin, later Jan Brady-Covington (center left) was portrayed by Eve Plumb in the TV series, The Brady Girls Get Married, The Brady Brides, A Very Brady Christmas and The Bradys. Since Plumb was unable to return at the time, Geri Reischl replaced her in The Brady Bunch Hour. Jennifer Elise Cox portrayed the character in the two theatrical films, and Ashley Drane in the TV movie.
 Question: were there two jans on the brady bunch Context: As of the 2018 FIFA World Cup, 79 national teams have competed at the final tournaments. Brazil are the only team to have appeared in all 21 tournaments to date, with Germany having participated in 19, Italy in 18, Argentina in 17 and Mexico in 16. To date, eight nations have won the tournament. The inaugural winners in 1930 were Uruguay; the current champions are France. The most successful nation in the competition are currently Brazil, who have won the cup on five occasions. Five teams have appeared in FIFA World Cup finals without winning, while twelve more have appeared in semi-finals.
 Question: has any country been in every world cup Context: Members of the public may own sporting rifles and shotguns, subject to licensing, but handguns were effectively banned after the Dunblane school massacre in 1996 with the exception of Northern Ireland. Dunblane was the UK's first and only school shooting. There has been one spree killing since Dunblane, the Cumbria shootings in June 2010, which involved a shotgun and a .22 caliber rifle, both legally-held. Prior to Dunblane though, there had only been one mass shooting carried out by a civilian in the entire history of Great Britain, which took place in Hungerford on 19 August 1987.
 Question: is it illegal to own a gun in england Context: The Third Avenue El was the last elevated line to operate in Manhattan, other than the 1 train on the IRT Broadway--Seventh Avenue Line (which has elevated sections between 122nd and 135th Streets and north of Dyckman Street), and was a frequent backdrop for movies. Service on the Second, Sixth and Ninth Avenue elevated lines were terminated in 1942, 1938, and 1940, respectively.
 Question: is there an elevated train in new york
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No