Question: what was the official religion of the soviet union
[{'answer': 'atheism', 'provenance': [{'wikipedia_id': '1364162', 'title': 'Religion in the Soviet Union', 'start_paragraph_id': 2, 'start_character': 222, 'end_paragraph_id': 2, 'end_character': 229, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1364162', 'title': 'Religion in the Soviet Union', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1104, 'bleu_score': 0.675116296661185, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10807717287434529806}, 'section': 'Section::::Abstract.'}]}]