Title: Energy.
Question: In what century did Leibniz propose the idea of Latin: vis viva?

Title: Computer.
Question: What type of software is stored in a BIOS chip?

Title: United States Air Force.
Question: What type of aircraft is not appropriate to be used in close proximity of US ground troops?

Title: Switzerland.
Question:
What type of grapes are grown in the valley of Valais?