Question: the principal balkan country in which ethnic cleansing took place in the mid-1990s was
[{'answer': 'Bosnia', 'provenance': [{'wikipedia_id': '33350819', 'title': 'List of ethnic cleansing campaigns', 'start_paragraph_id': 53, 'start_character': 87, 'end_paragraph_id': 53, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::20th century.:1940s.\n'}]}, {'provenance': [{'wikipedia_id': '33350819', 'title': 'List of ethnic cleansing campaigns', 'start_paragraph_id': 105, 'start_character': 0, 'end_paragraph_id': 105, 'end_character': 477, 'bleu_score': 0.9277431284700741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2577197768395944404}, 'section': 'Section::::20th century.:1990s.\n'}]}]