TASK DEFINITION: In this task, you are given a question. You have to answer the question based on your information.
PROBLEM: Who was the youngest son of Erik Thorvaldsson?

SOLUTION: Thorstein Eiriksson

PROBLEM: Works by what man, who was part of the duo Simon & Garfunkel, were included in the 1967 Joan Baez album, Joan?

SOLUTION: Paul Frederic Simon

PROBLEM: ACES II is an ejection seat system manufactured by the United Technologies Aerospace Systems (UTAS) division of the United Technologies Corporation (UTC), it is used in the Lockheed F-117 Nighthawk, a single-seat, twin-engine stealth attack aircraft that was developed by Lockheed's secretive Skunk Works division and operated by which organization?

SOLUTION:
United States Air Force (USAF)