Question: when does season 4 of fear the walking dead premiere
[{'answer': 'April 15 , 2018', 'provenance': [{'wikipedia_id': '55922148', 'title': 'Fear the Walking Dead (season 4)', 'start_paragraph_id': 1, 'start_character': 110, 'end_paragraph_id': 1, 'end_character': 125, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55922148', 'title': 'Fear the Walking Dead (season 4)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 551, 'bleu_score': 0.7174645408048661, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3091090088472644180}, 'section': 'Section::::Abstract.'}]}]