Question: when did tim hortons merge with burger king
[{'answer': '2014', 'provenance': [{'wikipedia_id': '180099', 'title': 'Tim Hortons', 'start_paragraph_id': 3, 'start_character': 14, 'end_paragraph_id': 3, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '180099', 'title': 'Tim Hortons', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 264, 'bleu_score': 0.8029442553780831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10637347415405809670}, 'section': 'Section::::Abstract.'}]}]