Question: last president to get lifetime secret service protection
[{'answer': 'Barack Obama', 'provenance': [{'wikipedia_id': '16335910', 'title': 'Former Presidents Act', 'start_paragraph_id': 17, 'start_character': 450, 'end_paragraph_id': 17, 'end_character': 462, 'bleu_score': 1.0, 'section': 'Section::::Current status.:Secret Service protection.\n'}]}, {'provenance': [{'wikipedia_id': '16335910', 'title': 'Former Presidents Act', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 637, 'bleu_score': 0.9027990397790501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10487945201522067817}, 'section': 'Section::::Current status.:Secret Service protection.\n'}]}]