Question: who is the largest coffee producer in the world
[{'answer': 'Brazil', 'provenance': [{'wikipedia_id': '36196672', 'title': 'List of countries by coffee production', 'start_paragraph_id': 4, 'start_character': 33, 'end_paragraph_id': 4, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::See also.\n'}]}]