Title: Philadelphia.
Question: How many major papers are published?

Title: MP3.
Question: Where was a test performed to collect data on student preference for MP3 quality?

Title: Crimean War.
Question: From April 1854 to February 1857, what port did the British and French lock down?

Title: Computer.
Question:
Who invented the first analog computer in the form of a tide-predicting machine?