Question: what is the pension of the president of the united states
[{'answer': '$207,800 per year', 'provenance': [{'wikipedia_id': '16335910', 'title': 'Former Presidents Act', 'start_paragraph_id': 9, 'start_character': 208, 'end_paragraph_id': 9, 'end_character': 225, 'bleu_score': 1.0, 'section': 'Section::::Current status.:Pension.\n'}]}, {'provenance': [{'wikipedia_id': '16335910', 'title': 'Former Presidents Act', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 429, 'bleu_score': 0.9111620659625651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14682481720638915535}, 'section': 'Section::::Current status.:Pension.\n'}]}]