Complex sentence: Hundreds of supposed clues to McCartney's death were reported by fans and followers of the legend; these included messages perceived when listening to a song being played backwards, and symbolic interpretations of both lyrics and album cover imagery.
Split into simpler sentences: Hundreds of supposed clues to McCartney's death have been reported by fans and followers of the legend. These include messages perceived when listening to a song being played backwards, and symbolic interpretations of both lyrics and album cover imagery.