Complex sentence: In October 2000 Sade famously came out of retirement to perform at the prestigious MOBO Awards, their first live performance since the early nineties, starting a wave of speculation that a possible Sade comeback was in the cards.
Split into simpler sentences: In October 2000 Sade famously came out of retirement to perform at the prestigious MOBO Awards. Her appearance at the MOBO Awards ceremony was her first live performance since the early nineties and started a wave of speculation that a possible Sade comeback was in the cards.