Question: when did season 2 of the four start
[{'answer': 'June 7 , 2018', 'provenance': [{'wikipedia_id': '55846870', 'title': 'The Four: Battle for Stardom', 'start_paragraph_id': 14, 'start_character': 45, 'end_paragraph_id': 14, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Season synopses.:Season 2.\n'}]}, {'provenance': [{'wikipedia_id': '55846870', 'title': 'The Four: Battle for Stardom', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 513, 'bleu_score': 0.9766041382465441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11521504394770904679}, 'section': 'Section::::Abstract.'}]}]