Question: what type of government did bulgaria have from 1944 to 1990
[{'answer': 'Communist', 'provenance': [{'wikipedia_id': '42542', 'title': 'History of Bulgaria', 'start_paragraph_id': 5, 'start_character': 38, 'end_paragraph_id': 5, 'end_character': 47, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '42542', 'title': 'History of Bulgaria', 'start_paragraph_id': 114, 'start_character': 0, 'end_paragraph_id': 114, 'end_character': 223, 'bleu_score': 0.9466178497997021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14234563199885582108}, 'section': "Section::::People's Republic of Bulgaria (1946–1991).\n"}]}]