Question: when does episode 2 of star trek discovery come on
[{'answer': 'September 24 , 2017', 'provenance': [{'wikipedia_id': '48442701', 'title': 'Star Trek: Discovery', 'start_paragraph_id': 55, 'start_character': 177, 'end_paragraph_id': 55, 'end_character': 196, 'bleu_score': 1.0, 'section': 'Section::::Release.\n'}]}]