Question: who led nationalist forces during chinas civil war
[{'answer': 'Chiang Kai - shek', 'provenance': [{'wikipedia_id': '54422', 'title': 'Chinese Civil War', 'start_paragraph_id': 76, 'start_character': 111, 'end_paragraph_id': 76, 'end_character': 130, 'bleu_score': 1.0, 'section': 'Section::::Reasons for the Communist victory.\n'}]}]