In complexity theory and computability theory, an oracle machine is an abstract machine used to study decision problems. It can be visualized as a Turing machine with a black box, called an oracle, which is able to solve certain decision problems in a single operation. The problem can be of any complexity class.
Sofia Carson is an American singer and actress. She played Chelsea in an episode of Austin and Ally, and played Evie in Descendants. She also played Lola Perez in Adventures in Babysitting.
Senta-Sofia Delliponti, better known by her stage name Oonagh, is a German singer and songwriter. Her signature musical style is inspired by the mystical lore of J. R. R. Tolkien's universe and by ethnic sounds throughout the world. She had her breakthrough in Star Search, a talent show in TV. She released a Christmas album with TV Allstars in 2003.