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: Saint Croix (/ˈkrɔɪ/) is an island in the Caribbean Sea, and a county and constituent district of the United States Virgin Islands (USVI), an unincorporated territory of the United States.
 Question: is st croix in the us virgin islands Context: The lack of wastewater treatment in some cities and towns discharging wastewater into sensitive areas is another matter of concern. In January 2008 the European Commission sent France a final warning alerting it that it will be taken to the European Court of Justice (ECJ) for the second time and possibly face fines unless it quickly brings its waste water treatment up to EU standards. France is not complying with the 1991 EU directive on urban waste water treatment. The deadline for treating all wastewater covered by the directive was 31 December 2000. In 2004 the European Court of Justice (ECJ) condemned France for failing to designate eleven areas as sensitive and for inadequate treatment facilities in a number of settlements which discharge their waste waters into these areas. The ECJ also found that 121 settlements breached the directive by discharging their waste waters into previously designated sensitive areas. In 2006 France designated the eleven areas as sensitive. However, 140 settlements -- including the city of Paris -- continue to discharge into these sensitive areas. With regard to the 121 settlements discharging into the previously designated sensitive areas France proceeded to rearrange them into 164 settlements, resulting in some settlements no longer meeting the threshold level of 10,000 residents at which the directive applies. The Commission considers such rearranging of settlements to avoid compliance with the directive unacceptable. In November 2009 it referred the matter to the ECJ.
 Question: are there any major water concerns for france Context: Doctor Sleep is a 2013 horror novel by American writer Stephen King and the sequel to his 1977 novel The Shining. King stated that it is ``a return to balls-to-the-wall, keep-the-lights-on horror''. The book reached the first position on The New York Times Best Seller list for print and ebook fiction (combined), hardcover fiction, and ebook fiction. Doctor Sleep won the 2013 Bram Stoker Award for Best Novel.
 Question: is doctor sleep a sequel to the shining Context: According to the theory of relativity, no information can travel faster than the speed of light in vacuum, but this does not mean that the refractive index cannot be lower than 1. The refractive index measures the phase velocity of light, which does not carry information. The phase velocity is the speed at which the crests of the wave move and can be faster than the speed of light in vacuum, and thereby give a refractive index below 1. This can occur close to resonance frequencies, for absorbing media, in plasmas, and for X-rays. In the X-ray regime the refractive indices are lower than but very close to 1 (exceptions close to some resonance frequencies). As an example, water has a refractive index of 6999999999740000000♠0.99999974 = 1 − 6993260000000000000♠2.6×10 for X-ray radiation at a photon energy of 6985480652946099999♠30 keV (0.04 nm wavelength).
 Question: is it possible to have a refractive index less than 1
Yes
Yes
Yes
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Yes