Question: Who was in the video don't worry be happy?
Disambiguated questions and answers: question: Who was in the 1998 music video don't worry, be happy?
Who was in the 2011 music video don't worry, be happy?
answer: Bobby McFerrin, Robin Williams, and Bill Irwin
Robin Williams
Bobby McFerrin
Bill Irwin
Guy Sebastian, ill young girl, and her father
question: Who was in the video don't worry be happy by Guy Sebastian?
Who was in the video don't worry be happy by Bobby McFerrin?
answer: Guy Sebastian
her father
young girl
Robin Williams
Bobby McFerrin
Bill Irwin
Natural Questions answer: McFerrin
Bill Irwin
Robin Williams (from the Wikipedia article "Don't Worry, Be Happy")