Question: who won the first sino japanese war and why
[{'answer': 'Empire of Japan'}, {'provenance': [{'wikipedia_id': '69972', 'title': 'First Sino-Japanese War', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 341, 'bleu_score': 0.7557392665107281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3407977496482637280}, 'section': 'Section::::Abstract.'}]}]