Question: who had the worlds largest economy in 2014
[{'answer': 'the United States', 'provenance': [{'wikipedia_id': '380845', 'title': 'List of countries by GDP (nominal)', 'start_paragraph_id': 4, 'start_character': 81, 'end_paragraph_id': 4, 'end_character': 98, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '380845', 'title': 'List of countries by GDP (nominal)', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 932, 'bleu_score': 0.986969988197764, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17693044637126804094}, 'section': 'Section::::Abstract.'}]}]