Question: when did the game show chain reaction come out
[{'answer': '1980', 'provenance': [{'wikipedia_id': '1185945', 'title': 'Chain Reaction (game show)', 'start_paragraph_id': 2, 'start_character': 113, 'end_paragraph_id': 2, 'end_character': 117, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]