Question: when did the coalition government come into power
[{'answer': '12 May 2010', 'provenance': [{'wikipedia_id': '34079907', 'title': '2010 United Kingdom government formation', 'start_paragraph_id': 1, 'start_character': 109, 'end_paragraph_id': 1, 'end_character': 120, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]