In this task, you are given a question. You have to answer the question based on your information.

[EX Q]: Whom was an immigrant Samuel Der-Yeghiayan or Charles Amirkhanian?
[EX A]: Samuel Der-Yeghiayan

[EX Q]: backing vocals on "Little Black Dress" were contributed by Bono and an English-born Irish musician who has recorded how many studio albums with U2?
[EX A]: 13

[EX Q]: What nationality is the musician who wrote the music of the song Enter Sandman, with Kirk Hammett and James Hetfield ?
[EX A]:
Danish