Deliver Us Tour was a concert tour by band Darkest Hour, taking place from late 2007, in support of their fifth studio album "Deliver Us" and finishing in December 2008. The tour started shortly after the Undoing Ruin Tour ended, earlier in December 2006.
Darkest hour released five studio albums. 
it is neither because it is not know how many albums have been released in total by the band and the AI guessed it as correct because the album deliver us was their fifth album.