question: What songs did Kanye dedicate to his late mother as his performance at The O2 in London ?
answer: `` Hey Mama '' , as well as a cover of Journey 's `` Do n't Stop Believin ' ''
turker_answer: Kanye dedicated `` Hey Mama , '' as well as a cover of Journey 's `` Do n't Stop Believin ' '' to his late mother during his performance at The O2 in London .
rule-based: Kanye dedicated `` Hey Mama '' , as well as a cover of Journey 's `` Do n't Stop Believin ' to his late mother as his performance at The O2 in London .