Complex sentence: On 6 March 1988, the three IRA members, Danny McCann, Sean Savage and Mairéad Farrell, were gunned down; the programme examined to what extent the event had been an'execution', with no attempt to arrest the IRA members.
Split into simpler sentences: On 6 March 1988, the three IRA members, Danny McCann, Sean Savage and Mairéad Farrell, were shot. The programme examined to what extent the event had been an'execution', with no attempt to arrest the IRA members.