Question: when does the new season of hard knocks start
[{'answer': 'August 7 , 2018', 'provenance': [{'wikipedia_id': '11575986', 'title': 'Hard Knocks (TV series)', 'start_paragraph_id': 116, 'start_character': 116, 'end_paragraph_id': 116, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::Seasons.:Cleveland Browns (2018).\n'}]}, {'provenance': [{'wikipedia_id': '11575986', 'title': 'Hard Knocks (TV series)', 'start_paragraph_id': 116, 'start_character': 0, 'end_paragraph_id': 116, 'end_character': 130, 'bleu_score': 0.812034170285978, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13097346451624846996}, 'section': 'Section::::Seasons.:Cleveland Browns (2018).\n'}]}]