Title: BeiDou Navigation Satellite System.
Question: As of December 2012, how many satellites had been launched for the BeiDou-2 system?

Title: Data compression.
Question: What is the process called when a signal is masked by another signal separated by time?

Title: European Central Bank.
Question: What happens when a lot of repo notes come due?

Title: Raleigh, North Carolina.
Question:
What district were the congressmen in 1898 from?