Complex sentence: Gaga performed an acoustic version of the song on the tenth series of "The X Factor" (UK) which prompted complaints to media regulator, Ofcom, due to the performance's suggestive nature, which was broadcast before the 9pm watershed.
Split into simpler sentences: Gaga performed an acoustic version of the song on the tenth series of "The X Factor" (UK). The "X Factor" performance prompted complaints to Ofcom due to the performance's suggestive nature, which was broadcast before the 9pm watershed.