Title: Vacuum.
Question: What type of pump appeared in the 15th century?

Title: Everton F.C..
Question: In what year did Liverpool announce that they would build their own Stanley Park Stadium?

Title: British Empire.
Question: How many Anglo-Dutch Wars were there in the 17th century?

Title: Jehovah%27s Witnesses.
Question:
How many languages is the Watch Tower Society literature published in?