Question: when did yugoslavia parted ways with the soviet union because of political differences
[{'answer': '1948', 'provenance': [{'wikipedia_id': '3357206', 'title': 'Tito–Stalin split', 'start_paragraph_id': 1, 'start_character': 214, 'end_paragraph_id': 1, 'end_character': 218, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3357206', 'title': 'Tito–Stalin split', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 336, 'bleu_score': 0.9210921090251241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6506241571192638704}, 'section': 'Section::::Abstract.'}]}]