Question: bosnia croatia and serbia were once part of
[{'answer': 'Yugoslavia', 'provenance': [{'wikipedia_id': '2060900', 'title': 'Breakup of Yugoslavia', 'start_paragraph_id': 0, 'start_character': 11, 'end_paragraph_id': 0, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2060900', 'title': 'Breakup of Yugoslavia', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 919, 'bleu_score': 0.969607525075692, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8784721387588378040}, 'section': 'Section::::Abstract.'}]}]