Premise: 25 (Adele album) . It was released on 20 November 2015 , through XL Recordings . 25 eventually became the world 's best-selling album of 2015 with 17.4 million copies sold within the year , and has sold 20 million copies as of June 2016 , making it one of the best selling albums worldwide .
Hypothesis: 25 was hidden in 2015.
Label: NEUTRAL