Question: when does the champions league start and end
[{'answer': '11 August 2017', 'provenance': [{'wikipedia_id': '53122929', 'title': '2017–18 Premier League', 'start_paragraph_id': 1, 'start_character': 193, 'end_paragraph_id': 1, 'end_character': 207, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '13 May 2018', 'provenance': [{'wikipedia_id': '53122929', 'title': '2017–18 Premier League', 'start_paragraph_id': 1, 'start_character': 225, 'end_paragraph_id': 1, 'end_character': 236, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '53122929', 'title': '2017–18 Premier League', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 300, 'bleu_score': 0.8416193821972701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15933048557934371702}, 'section': 'Section::::Abstract.'}]}]