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: Construction began on Columbia in 1975 at Rockwell International's (formerly North American Aviation/North American Rockwell) principal assembly facility in Palmdale, California, a suburb of Los Angeles. Columbia was named after the American sloop Columbia Rediviva which, from 1787 to 1793, under the command of Captain Robert Gray, explored the US Pacific Northwest and became the first American vessel to circumnavigate the globe. It is also named after the Command Module of Apollo 11, the first manned landing on another celestial body. Columbia was also the female symbol of the United States. After construction, the orbiter arrived at Kennedy Space Center on March 25, 1979, to prepare for its first launch. Columbia was originally scheduled to lift off in late 1979, however the launch date was delayed by problems with both the SSME components, as well as the thermal protection system (TPS). On March 19, 1981, during preparations for a ground test, workers were asphyxiated while working in Columbia's nitrogen-purged aft engine compartment, resulting in (variously reported) two or three fatalities.
 Question: was columbia the first space shuttle to fly into space Context: Currently, federal law requires background checks (through the National Instant Criminal Background Check System) only for guns sold through licensed firearm dealers, which account for 78% of all gun sales in the United States. This figure was published in a 2017 study by the Annals of Internal Medicine which compared data from 1994, indicating 40% of recent gun acquisitions were completed without a background check, to a 2015 survey which found that 22% of recent gun transfers (purchased and nonpurchased) were completed without a background check. The current federal law allows people not ``engaged in the business'' of selling firearms to sell firearms without a license or records. The Coalition to Stop Gun Violence (CSGV) states that the National Instant Criminal Background Check System has prevented over two million felons and other prohibited persons from purchasing firearms. According to the CSGV, the law also has a prohibitive effect, that deters illegal purchases.
 Question: are there background checks for guns in america Context: The NFL's cap is a hard cap that the teams have to stay under at all times, and the salary floor is also a hard floor. Penalties for violating or circumventing the cap regulations include fines of up to $5 million for each violation, cancellation of contracts and/or loss of draft picks. Violating the salary floor regulations does not result in any fines or competitive penalties; instead, deficiencies are placed into a pool and distributed among all players who were on the regular roster of the offending team during a four-year floor cycle, prorated according to time on the roster in said period.
 Question: is there a salary cap in nfl football
Yes
No
Yes
Yes