Question: how long do former presidents receive secret service protection
[{'answer': 'lifetime', 'provenance': [{'wikipedia_id': '16335910', 'title': 'Former Presidents Act', 'start_paragraph_id': 1, 'start_character': 111, 'end_paragraph_id': 1, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'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': 10301270234059521514}, 'section': 'Section::::Current status.:Secret Service protection.\n'}]}]