Question: when did japan enter world war 2 e
[{'answer': '1941', 'provenance': [{'wikipedia_id': '32927', 'title': 'World War II', 'start_paragraph_id': 2, 'start_character': 344, 'end_paragraph_id': 2, 'end_character': 348, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32927', 'title': 'World War II', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 535, 'bleu_score': 0.977897140678983, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16572042456114042051}, 'section': 'Section::::Chronology.\n'}]}]