Question: who is the president of the united states 2016
[{'answer': 'Barack Obama', 'provenance': [{'wikipedia_id': '21377251', 'title': '2016 United States presidential election', 'start_paragraph_id': 7, 'start_character': 10, 'end_paragraph_id': 7, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}, {'answer': 'Donald Trump', 'provenance': [{'wikipedia_id': '21377251', 'title': '2016 United States presidential election', 'start_paragraph_id': 1, 'start_character': 174, 'end_paragraph_id': 1, 'end_character': 186, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]