Question: when did the strategic arms limitation talks begin
[{'answer': 'November 1969', 'provenance': [{'wikipedia_id': '154849', 'title': 'Strategic Arms Limitation Talks', 'start_paragraph_id': 2, 'start_character': 48, 'end_paragraph_id': 2, 'end_character': 61, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '154849', 'title': 'Strategic Arms Limitation Talks', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 459, 'bleu_score': 0.9408228243926111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11347553824228696834}, 'section': 'Section::::Abstract.'}]}]