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: Thrust SSC holds the world land speed record, set on 15 October 1997, when it achieved a speed of 1,228 km/h (763 mph) and became the first land vehicle to officially break the sound barrier.
 Question: can a car go the speed of sound Context: Twenty-three states have no minimum age in at least one judicial waiver or statutory exclusion provision allowing for the transfer of juveniles to adult court. In states where a minimum age is specified for all transfer provisions, age 14 is the most common minimum age.
 Question: can 17 year olds be tried as adults Context: In a more precise sense, the PDF is used to specify the probability of the random variable falling within a particular range of values, as opposed to taking on any one value. This probability is given by the integral of this variable's PDF over that range--that is, it is given by the area under the density function but above the horizontal axis and between the lowest and greatest values of the range. The probability density function is nonnegative everywhere, and its integral over the entire space is equal to one.
 Question: the area under the entire probability density function equals 1 Context: The fifth season began airing on December 1, 2017, and ran for 22 episodes on ABC until May 18, 2018. The two-part premiere debuted to 2.54 million viewers, marking the lowest-rated season premiere of the series. Despite consistently low viewership, critical reception of the season was positive, with many commending the series for its ambition, in particular praising the futuristic space setting during its first half and exploration of time travel. Critics also praised the performances, character development and writing. The series was renewed for a sixth season on May 14, 2018.
 Question: is season 5 the final season of agents of shield 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: can a refractive index be less than 1
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