Conversation so far:
What did the singer, Cheryl do on The X Factor?
In 2014, the singer, Cheryl returned as a judge on the UK version of The X Factor for its 11th series to replace Sharon Osbourne, signing a £1.5 million contract.
How long was the singer, Cheryl a judge on The X Factor in 2014?
Cheryl announced her departure from The X Factor in April 2016.
What did the singer, Cheryl do for the album, Only Human?
Only Human is the fourth studio album by English recording artist Cheryl.
Did the singer, Cheryl perform on The X Factor?
Cheryl was joined by Simon Cowell, Louis Walsh and Mel B on the judging panel. She was selected to mentor the girls category.
How well did the singer, Cheryl's album, Only Human do on the charts?
Cheryl's album, Only Human entered the UK Albums Chart at number seven.
Did the singer, Cheryl win any awards for the Only Human album?

Question: When did she leave The X Factor?
Self-contained rewrite: When did the singer, Cheryl leave The X Factor?