Complex sentence: Adele collaborated with Dan Wilson on the album's second single "Someone Like You"; she co-wrote "Set Fire to the Rain" with Fraser T Smith and with Ryan Tedder on "Rumour Has It" and "Turning Tables".
Split into simpler sentences: Adele collaborated with Dan Wilson on the album's second single, "Someone Like You". She co-wrote with Fraser T Smith on "Set Fire to the Rain" and with Ryan Tedder on "Rumour Has It" and "Turning Tables".