You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.

Input: Consider Input: 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♠️2.610 for X-ray radiation at a photon energy of 6985480652946099999♠️30 keV (0.04 nm wavelength).

Output: can a refractive index be less than 1?

Input: Consider Input: The top of the tower is currently known as the Blackpool Tower Eye. At a height of 380 feet (120 m), the Eye is the highest observation deck in North West England. It was previously known simply as the Tower Top, until it reopened on September 2011. Reopening after major renovation, new owner Blackpool Council brought in Merlin Entertainments to manage the attractions, with Merlin deciding to incorporate the tower into its range of ''Eye'' branded attractions.

Output: is blackpool ballroom at the top of the tower?

Input: Consider Input: On 19 October 2015, the Seven Network and South Pacific Pictures renewed the show for a second season. It premiered on 23 August 2016 in Australia. On January 24, 2017, the Seven Network announced that the series had been renewed for a third season. It screened from 12 September 2017 with a mid-season finale after 8 episodes.
Output: will there be a 3rd series of 800 words?