Question: when is next olympic games to be held
[{'answer': '2020', 'provenance': [{'wikipedia_id': '11015817', 'title': 'List of Olympic Games host cities', 'start_paragraph_id': 3, 'start_character': 86, 'end_paragraph_id': 3, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '11015817', 'title': 'List of Olympic Games host cities', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 791, 'bleu_score': 0.7447685726576171, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16759619712366459953}, 'section': 'Section::::Abstract.'}]}]