Original sentence: It faced major opposition from the Basque anti-nuclear movement and the Basque armed separatist organization ETA.The building of the power station was opposed by ETA, a Basque separatist organisation proscribed as a terrorist group by the Spanish government
Edited sentence: It faced major opposition from the Basque anti-nuclear movement and the Basque terrorist separatist organization ETA.The building of the power station was opposed by ETA, a Basque separatist terrorist organisation