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: However, one contestant in the unaired second season (S02E09) did answer all 21 questions truthfully to win the top prize. The contestant was Melanie Williams, a member of a secretive polygamist group. Most of the questions centered around the secrets of polygamy and what took place in the group in which Williams was a member. For $500,000, Williams' final question was whether she believed her father had sexual relations as an adult with a minor. She said she felt he did, and the lie detector determined her truthful for the grand prize.
 Question: has anyone ever won the moment of truth Context: In economics, returns to scale and economies of scale are related but different terms that describe what happens as the scale of production increases in the long run, when all input levels including physical capital usage are variable (chosen by the firm). The term returns to scale arises in the context of a firm's production function. It explains the behavior of the rate of increase in output (production) relative to the associated increase in the inputs (the factors of production) in the long run. In the long run all factors of production are variable and subject to change due to a given increase in size (scale). While economies of scale show the effect of an increased output level on unit costs, returns to scale focus only on the relation between input and output quantities.
 Question: is increasing returns to scale the same as economies of scale Context: During the American Civil War, the Union was the first to field a submarine. The French-designed Alligator was the first U.S. Navy sub and the first to feature compressed air (for air supply) and an air filtration system. It was the first submarine to carry a diver lock, which allowed a diver to plant electrically detonated mines on enemy ships. Initially hand-powered by oars, it was converted after 6 months to a screw propeller powered by a hand crank. With a crew of 20, it was larger than Confederate submarines. Alligator was 47 feet (14 m) long and about 4 feet (1.2 m) in diameter. It was lost in a storm off Cape Hatteras on April 1, 1863, while uncrewed and under tow to its first combat deployment at Charleston.
 Question: did they use submarines in the civil war Context: Another salient aspect of ``My Generation'' is Daltrey's delivery: an angry and frustrated stutter. Various stories exist as to the reason for this distinct delivery. One is that the song began as a slow talking blues number without the stutter (in the 1970s it was sometimes performed as such, but with the stutter, as ``My Generation Blues''), but after being inspired by John Lee Hooker's ``Stuttering Blues,'' Townshend reworked the song into its present form. Another reason is that it was suggested to Daltrey that he stutter to sound like a British mod on speed. It is also proposed, albeit less frequently, that the stutter was introduced to give the group a framework for implying an expletive in the lyrics: ``Why don't you all fff... fade away!'' However, producer Shel Talmy insisted it was simply ``one of those happy accidents'' that he thought they should keep. Roger Daltrey has also commented that he had not rehearsed the song prior to the recording, was nervous, and he was unable to hear his own voice through the monitors. The stutter came about as he tried to fit the lyrics to the music as best he could, and the band decided it worked well enough to keep. The BBC initially refused to play ``My Generation'' because it did not want to offend people who stutter, but it reversed its decision after the song became more popular.
 Question: did the lead singer of the who have a stutter
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