Original sentence: The 1987 Hipercor bombing was a car bomb attack by the Basque separatist organisation ETA which occurred on 19 June 1987 at the Hipercor shopping centre on Avinguda Meridiana, Barcelona, Spain
Edited sentence: The 1987 Hipercor bombing was a car bomb attack by the criminal terrorist organization ETA which occurred on 19 June 1987 at the Hipercor shopping centre on Avinguda Meridiana, Barcelona, Spain