Question: who has the most aircraft in the world
[{'answer': 'American Airlines Group', 'provenance': [{'wikipedia_id': '1374854', 'title': "World's largest airlines", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1374854', 'title': "World's largest airlines", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 404, 'bleu_score': 0.6544765924333471, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2356233974544290880}, 'section': 'Section::::Abstract.'}]}]