Question: who invaded china in 1937 and occupied the best farmland by 1938
[{'answer': 'Japan', 'provenance': [{'wikipedia_id': '54422', 'title': 'Chinese Civil War', 'start_paragraph_id': 1, 'start_character': 527, 'end_paragraph_id': 1, 'end_character': 532, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '54422', 'title': 'Chinese Civil War', 'start_paragraph_id': 28, 'start_character': 0, 'end_paragraph_id': 28, 'end_character': 443, 'bleu_score': 0.9731482306711111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16022940678950008178}, 'section': 'Section::::Second Sino-Japanese War (1937–1945).\n'}]}]