Complex sentence: In March 2011, she appeared with Lenny Henry, Samantha Womack and Reggie Yates in the BBC fundraising documentary for Comic Relief called "Famous, Rich and in the Slums", where the four celebrities were sent to Kibera in Kenya, Africa's largest slum.
Split into simpler sentences: In March 2011, she appeared with Lenny Henry, Samantha Womack and Reggie Yates in a BBC documentary to raise funds for Comic Relief. It was called "Famous, Rich and in the Slums", and showed four celebrities travel to Kibera in Kenya, Africa's largest slum.