Question: where is most of the world's corn grown
[{'answer': 'United States', 'provenance': [{'wikipedia_id': '39564241', 'title': 'Corn production in the United States', 'start_paragraph_id': 0, 'start_character': 23, 'end_paragraph_id': 0, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39564241', 'title': 'Corn production in the United States', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 332, 'bleu_score': 0.767102318821929, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13101927347374067094}, 'section': 'Section::::Abstract.'}]}]