Question: who was president when the united states acquired the right to build a canal across panama
[{'answer': 'Roosevelt', 'provenance': [{'wikipedia_id': '315787', 'title': 'Panama Canal Zone', 'start_paragraph_id': 10, 'start_character': 381, 'end_paragraph_id': 10, 'end_character': 390, 'bleu_score': 1.0, 'section': 'Section::::History.:Proposals for a canal.\n'}]}, {'provenance': [{'wikipedia_id': '315787', 'title': 'Panama Canal Zone', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 1439, 'bleu_score': 0.9681172137270491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1931150596988444353}, 'section': 'Section::::History.:Proposals for a canal.\n'}]}]