TASK DEFINITION: In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
PROBLEM: Context: A more powerful engine was added to the second prototype, and a single 7.92 mm (.312 in) MG 15 machine gun for the rear seat was added to the third prototype. Link Information: he World War II MG 15 was used in nearly all Luftwaffe aircraft with a flexible-mount defensive position. Question: What other planes were fitted with the MG 15?

SOLUTION: Answer: nearly all Luftwaffe aircraft with a flexible-mount defensive position

PROBLEM: Context: Contrary to popular belief, Layne Staley of Alice in Chains neither auditioned nor was asked to join the new project. Tom Morello denied this claim on his Twitter account in 2015. Link Information: Twitter was created in March 2006 Question: How long had the social media platform Tom Morello used to deny courting Layne Staley for his band been in existence when he did so?

SOLUTION: Answer: 9

PROBLEM: Context: Carpenter flew on reconnaissance and anti-submarine warfare missions from Naval Air Station Atsugi in Japan during the Korean War. Link Information: Approximately 3 million people died in the Korean War Question: How many lives were lost in the war in which Carpenter flew reconnaissance and anti-submarine warfare missions in Japan?

SOLUTION:
Answer: Approximately 3 million