Question: when did russia become part of the un
[{'answer': '1945', 'provenance': [{'wikipedia_id': '1861361', 'title': 'Russia and the United Nations', 'start_paragraph_id': 3, 'start_character': 52, 'end_paragraph_id': 3, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '1861361', 'title': 'Russia and the United Nations', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 377, 'bleu_score': 0.96746874041754, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12283588411713041854}, 'section': 'Section::::History.\n'}]}]