instruction:
You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.
question:
The Vampire Diaries is an American supernatural drama television series developed by Kevin Williamson and Julie Plec, based on the popular book series of the same name written by L.J. Smith. The series premiered on The CW on September 10, 2009, and concluded on March 10, 2017, airing 171 episodes over eight seasons.
answer:
is vampire diaries a spin off of twilight?


question:
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).
answer:
can a refractive index be less than 1?


question:
Goal Line Technology was used in the UEFA Europa League final, UEFA Champions League, European Championship and Copa America for the first time in 2016.
answer:

is there goal line technology in the championship?