Premise: Louis Tomlinson . He is known as a member of the pop boy band One Direction . In 2010 , he became a founding member of One Direction after auditioning as a solo artist on The X Factor . One Direction ( commonly abbreviated as 1D ) are an English-Irish pop boy band based in London , composed of Niall Horan , Liam Payne , Harry Styles , Louis Tomlinson , and previously , Zayn Malik until his departure from the band on 25 March 2015 .
Hypothesis: Louis Tomlinson was a founding member of a boy band.
Label: ENTAILMENT