Given a text, write a compressed version of it in a single sentence.

[EX Q]: This assessment is based on an extensive review of FBI files and interviews with agents and supervisors at FBI Headquarters and various field offices.
[EX A]: This assessment is based on an extensive review of FBI files and interviews.

[EX Q]: The preferred stock, which would have a dividend rate of $1.76 a year, would be convertible into Heritage common at a rate of four common shares for each preferred. New York - based POP Radio provides, through a national, in - store network, a customized music, information and advertising service which simulates live radio.
[EX A]: Preferred stock would be convertible into Heritage. POP Radio provides, through a national, in - store network, a customized music, information and advertising service which simulates live radio.

[EX Q]: A USAT front-page story reports that Honda has developed a virtually pollution-free gasoline engine that will be as powerful as conventional ones, and yet not more expensive.
[EX A]:
Honda has developed a virtually pollution-free gasoline engine that will be as powerful as conventional ones.