Question: when did the nuclear arms race take place
[{'answer': 'during the Cold War', 'provenance': [{'wikipedia_id': '585704', 'title': 'Nuclear arms race', 'start_paragraph_id': 1, 'start_character': 157, 'end_paragraph_id': 1, 'end_character': 176, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '585704', 'title': 'Nuclear arms race', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 389, 'bleu_score': 0.923768200931469, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10382658035200303868}, 'section': 'Section::::Abstract.'}]}]