Question: what was used by the revolutionaries to execute opponents
[{'answer': 'guillotine', 'provenance': [{'wikipedia_id': '25975', 'title': 'Reign of Terror', 'start_paragraph_id': 40, 'start_character': 29, 'end_paragraph_id': 40, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::Thermidorian Reaction.\n'}]}, {'provenance': [{'wikipedia_id': '25975', 'title': 'Reign of Terror', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 401, 'bleu_score': 0.906020687737331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7982526298858469253}, 'section': 'Section::::Abstract.'}]}]