Question: when do new episodes of the big bang theory start
[{'answer': 'September 25 , 2017', 'provenance': [{'wikipedia_id': '11269605', 'title': 'The Big Bang Theory', 'start_paragraph_id': 95, 'start_character': 787, 'end_paragraph_id': 95, 'end_character': 806, 'bleu_score': 1.0, 'section': 'Section::::Offshoots.:Spin-off series.\n'}]}]