premise: Kwon So-hyun (born August 30, 1994), is a South Korean singer and actress. She was known as a member of the South Korean girl group 4Minute, under Cube Entertainment. She is also a former member of the South Korean girl group, Orange. Before June 15, 2016 (end of her contract with Cube), Sohyun left 4Minute and the record label along with members Nam Ji-hyun, Heo Ga-yoon, and Jeon Ji-yoon.
hypothesis: Kwon So-hyun was a failed actress. 
reason: It is not specifically mentioned that she had a successful or a poor acting career. She is only well known for here music career. I think it got it wrong because she labelled an actress, but you can be an actress and not have any work.