IRA FLATOW, HOST:
This is SCIENCE FRIDAY. I'm Ira Flatow. If you tuned into "Jeopardy!" in 2011, you might have heard an exchange like this.
(SOUNDBITE OF TV SHOW, "JEOPARDY!")
ALEX TREBEK: Watson, start us, please.
WATSON: The European Union for $200.
TREBEK: As of 2010, Croatia and Macedonia are candidates but this is the only former Yugoslav Republic in the EU. Brad.
BRAD: What is Bosnia?
TREBEK: No. Watson.
WATSON: What is Serbia?