Question: when does ravens home premiere on disney channel
[{'answer': 'July 21 , 2017', 'provenance': [{'wikipedia_id': '53691702', 'title': "Raven's Home", 'start_paragraph_id': 29, 'start_character': 118, 'end_paragraph_id': 29, 'end_character': 132, 'bleu_score': 1.0, 'section': 'Section::::Broadcast.\n'}]}]