Complex sentence: In 2004, Karuna Amman fell out with the leader of the Tamil Tigers, Velupillai Prabhakaran, and defected from the organization on March 3, taking around 5000 cadres with him, forming what was then referred to as the "Karuna Faction".
Split into simpler sentences: In 2004, Karuna Amman fell out with the leader of the Tamil Tigers, Velupillai Prabhakaran, and defected from the organization on March 3. He took around 5000 cadres with him and formed what was then referred to as the "Karuna Faction".