Complex sentence: In 2011, Poole auditioned for the eighth series of "The X Factor" and reached the "judges' houses" stage, where Louis Walsh was her mentor in the "over 25s" category.
Split into simpler sentences: In 2011, Poole auditioned for the eighth series of "The X Factor". She reached the "judges' houses" stage, where Louis Walsh was her mentor in the "over 25s" category.