Question: who declared war on us after pearl harbor
[{'answer': 'Japan', 'provenance': [{'wikipedia_id': '13869376', 'title': 'Consequences of the attack on Pearl Harbor', 'start_paragraph_id': 4, 'start_character': 60, 'end_paragraph_id': 4, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::American public opinion prior to the attack.\n'}]}, {'provenance': [{'wikipedia_id': '13869376', 'title': 'Consequences of the attack on Pearl Harbor', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 295, 'bleu_score': 0.908198718008664, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7231307955484386758}, 'section': 'Section::::Japanese views.\n'}]}]