Question: which states were part of the warsaw pact alliance
[{'answer': 'Albania', 'provenance': [{'wikipedia_id': '33622', 'title': 'Warsaw Pact', 'start_paragraph_id': 2, 'start_character': 477, 'end_paragraph_id': 2, 'end_character': 484, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Bulgaria', 'provenance': [{'wikipedia_id': '33622', 'title': 'Warsaw Pact', 'start_paragraph_id': 52, 'start_character': 417, 'end_paragraph_id': 52, 'end_character': 425, 'bleu_score': 1.0, 'section': 'Section::::History.:End of the Cold War.\n'}]}, {'answer': 'Czechoslovakia', 'provenance': [{'wikipedia_id': '33622', 'title': 'Warsaw Pact', 'start_paragraph_id': 2, 'start_character': 396, 'end_paragraph_id': 2, 'end_character': 410, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'East Germany', 'provenance': [{'wikipedia_id': '33622', 'title': 'Warsaw Pact', 'start_paragraph_id': 2, 'start_character': 499, 'end_paragraph_id': 2, 'end_character': 511, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Hungary', 'provenance': [{'wikipedia_id': '33622', 'title': 'Warsaw Pact', 'start_paragraph_id': 49, 'start_character': 84, 'end_paragraph_id': 49, 'end_character': 91, 'bleu_score': 1.0, 'section': 'Section::::History.:During Cold War.\n'}]}, {'answer': 'Poland', 'provenance': [{'wikipedia_id': '33622', 'title': 'Warsaw Pact', 'start_paragraph_id': 1, 'start_character': 146, 'end_paragraph_id': 1, 'end_character': 152, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Romania', 'provenance': [{'wikipedia_id': '33622', 'title': 'Warsaw Pact', 'start_paragraph_id': 2, 'start_character': 486, 'end_paragraph_id': 2, 'end_character': 493, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Soviet Union', 'provenance': [{'wikipedia_id': '33622', 'title': 'Warsaw Pact', 'start_paragraph_id': 1, 'start_character': 165, 'end_paragraph_id': 1, 'end_character': 177, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]