Question: Who is the youtube that has most subscribers?
qaPairs: question: Who became the YouTube channel with the most subscribers on Dec 23, 2013?
answer: PewDiePie
question: Who became the YouTube channel with the most subscribers on Dec 12, 2013?
answer: YouTube Spotlight
question: Who became the YouTube channel with the most subscribers on Dec 8, 2013?
answer: PewDiePie