Q: The phase velocity of an electromagnetic wave, when traveling through a medium, can routinely exceed c, the vacuum velocity of light. For example, this occurs in most glasses at X-ray frequencies. However, the phase velocity of a wave corresponds to the propagation speed of a theoretical single-frequency (purely monochromatic) component of the wave at that frequency. Such a wave component must be infinite in extent and of constant amplitude (otherwise it is not truly monochromatic), and so cannot convey any information. Thus a phase velocity above c does not imply the propagation of signals with a velocity above c.
Can we conclude that can phase velocity be greater than speed of light?
A: yes

Q: Firearms regulations are uniform throughout Florida, and a carry license is valid everywhere other than in a few specially-defined areas. These prohibited places include any police station, prison, courthouse, polling place, government meeting place, airport, seaport, or tavern. Concealed carry is also prohibited in any school, except for authorized security personnel or armed marshals.
Can we conclude that can you carry a concealed weapon in florida?
A: yes

Q: The gastrointestinal tract (digestive tract, digestional tract, GI tract, GIT, gut, or alimentary canal) is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces. The mouth, esophagus, stomach and intestines are part of the gastrointestinal tract. Gastrointestinal is an adjective meaning of or pertaining to the stomach and intestines. A tract is a collection of related anatomic structures or a series of connected body organs.
Can we conclude that is the mouth part of the gi tract?
A: yes

Q: In February 2006, JotSpot was named part of Business 2.0, ''Next Net 25'', and in May 2006, it was honored as one of InfoWorld's ''15 Start-ups to Watch''. In October 2006, JotSpot was acquired by Google. Google announced a prolonged data transition of webpages created using Google Page Creator (also known as ''Google Pages'') to Google Sites servers in 2007. On February 28, 2008, Google Sites was unveiled using the JotSpot technology. The service was free, but users needed a domain name, which Google offered for $10. However, as of May 21, 2008, Google Sites became available for free, separately from Google Apps, and without the need for a domain.
Can we conclude that do you have to pay for google sites?
A:
no