Question: Madison Lee De La Garza, is an American actress, and is the younger half-sister of which American singer, songwriter, and actress, that after making her debut as a child actress in "Barney & Friends, she rose to prominence in 2008 when she starred in the Disney Channel television film "Camp Rock"?
{'answer': 'Demi Lovato', 'supporting_facts': [['Madison De La Garza', 2], ['Demi Lovato', 0]]}