TASK DEFINITION: You are given a concept, and a list of answers. You should generate a question about the concept that leads to the given answer(s).
PROBLEM: concept: William Mckinley  answers:  ['Poland Seminary High School']

SOLUTION: where did william mckinley go to high school?

PROBLEM: concept: Trey Songz  answers:  ['Petersburg High School']

SOLUTION: where did trey songz go to high school?

PROBLEM: concept: Greenwich Mean Time  answers:  ['Codicote', 'Ballincollig', 'Reykjavik', 'Iceland', 'Booterstown', 'WF1 1HS', 'Oxford', 'Halifax', 'Glasgow', 'Harpenden']

SOLUTION:
what city uses gmt?