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:
Mark Everett Sloan, M.D., F.A.C.S. is a fictional character from ABC's medical drama television series Grey's Anatomy, portrayed by Eric Dane. Created by series producer Shonda Rhimes, the character was introduced in season two as Dr. Derek Shepherd's best friend who acted as the catalyst for the end of Shepherd's marriage when Shepherd caught Sloan sleeping with his wife, Dr. Addison Montgomery. Soon after moving to Seattle Grace Hospital as an attending specializing in plastic surgery to reconcile with Derek, Mark earned the nickname ''McSteamy'' for his good looks by the female interns. Mark's focal storyline in the series involved his romantic relationship with Dr. Lexie Grey. Both he and Lexie sustained life-threatening injuries after an aviation accident in the eighth season finale, which resulted in their deaths. Seattle Grace is later renamed Grey-Sloan Memorial Hospital in their memory.
answer:
is mark sloan still on grey's anatomy?

question:
The chocolate bar is structured in two layers; a lightly-whipped nougat layer, with a lower layer of cereal 'crispies', these are then coated in milk chocolate. Originally the bar contained raisins within the base layer; however, consumer research in the mid-1980s led to these being removed and the current formulation being introduced. Television adverts in the 1970s featured Willie Rushton before a mascot named Dougie the Double Decker Dog was introduced.
answer:
did double deckers used to have raisins in?

question:
The word electricity refers generally to the movement of electrons (or other charge carriers) through a conductor in the presence of potential and an electric field. The speed of this flow has multiple meanings. In everyday electrical and electronic devices, the signals or energy travel as electromagnetic waves typically on the order of 50%--99% of the speed of light, while the electrons themselves move (drift) much more slowly.
answer:
do electrons travel at the speed of light?