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'.

Context: A more powerful engine was added to the second prototype, and a single 7.92mm (.312in) 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?
Answer: nearly all Luftwaffe aircraft with a flexible-mount defensive position

Context: it returned to 24 American teams when the Vegas Golden Knights joined in 2017 Link Information: .
The team announced inaugural head coach Gerard Gallant on April 13, 2017. Question: Who was the first head coach of the team that made it 24 American teams in the NHL?
Answer: Gerard Gallant

Context: The song begins with a boogie-woogie blues riff by pianist Richard Manuel followed by lead singer Rick Danko Link Information: Richard Clare Danko (December 29, 1943 December 10, 1999) Question: Who is older between the lead singer and pianist on the song?
Answer: Richard Manuel