Question: when did the us take over the panama canal
[{'answer': 'May 4 , 1904', 'provenance': [{'wikipedia_id': '2869783', 'title': 'History of the Panama Canal', 'start_paragraph_id': 39, 'start_character': 80, 'end_paragraph_id': 39, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::United States.:Takeover.\n'}]}, {'provenance': [{'wikipedia_id': '2869783', 'title': 'History of the Panama Canal', 'start_paragraph_id': 39, 'start_character': 0, 'end_paragraph_id': 39, 'end_character': 306, 'bleu_score': 0.9611463610973231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13781017745918557007}, 'section': 'Section::::United States.:Takeover.\n'}]}]