Complex sentence: In early May, Typhoon Noul and Typhoon Dolphin rapidly deepened into Category 5 super typhoons, the second and third of the season as Dolphin was the earliest seventh named storm on record in the basin.
Split into simpler sentences: In early May, Typhoon Noul and Typhoon Dolphin rapidly deepened into Category 5 super typhoons, the second and third of the season. In addition, Dolphin was the earliest seventh named storm on record in the basin.