Original sentence: However, Ponnambalam and Senanayake were strongly criticized by the Marxist groups as well as by the pro-Sri Lankan Tamil Federal Party (Sri Lanka), it branded Ponnambalam a "traitor", and Senanayake a "Sinhala extremist
Edited sentence: However, Ponnambalam and Senanayake were strongly criticized by the Marxist groups as well as by the Tamil nationalist  "Ilankai Thamil Arasu Kachchi (ITAK)", or "Lanka Tamil Sovereignist Party".The ITAK branded Ponnambalam a "traitor", and Senanayake a "Sinhala extremist