Question: what us president is the only president to become an eagle scout
[{'answer': 'Ford', 'provenance': [{'wikipedia_id': '5030380', 'title': 'Gerald Ford', 'start_paragraph_id': 0, 'start_character': 7, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5030380', 'title': 'Gerald Ford', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 167, 'bleu_score': 0.9364250605898111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3043895946053755336}, 'section': 'Section::::Early life.\n'}]}, {'provenance': [{'wikipedia_id': '5030380', 'title': 'Gerald Ford', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3043895946053755336}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '76511', 'title': 'Boy Scouts of America', 'section': 'Section::::Impact on American life.\n', 'start_paragraph_id': 113, 'end_paragraph_id': 113, 'meta': {'evidence_span': ['"Reader\'s Digest". President Gerald Ford said, "I can say without hesitation, because of Scouting principles, I know I was a better athlete, I was a better naval officer, I was a better congressman, and I was a better prepared President." Famed American illustrator Norman Rockwell\'s works were closely associated with the Boy Scouts of America for much of the 20th century. Beginning in 1913, Rockwell began illustrating covers of "Boys\' Life", the magazine for BSA youth. He also drew the organization\'s annual calendar illustrations between 1925 and 1976.', 'President Gerald Ford said, "I can say without hesitation, because of Scouting principles, I know I was a better athlete, I was a better naval officer, I was a better congressman, and I was a better prepared President."']}}]}, {'provenance': [{'wikipedia_id': '76511', 'title': 'Boy Scouts of America', 'section': 'Section::::Program.:Eagle Scout.\n', 'start_paragraph_id': 51, 'end_paragraph_id': 51, 'meta': {'evidence_span': ['Secretary of Defense Robert Gates, and President Gerald Ford are just a small sample of Eagle Scouts. Since February 2019, girls have been eligible to earn ranks and merit badges including Eagle Scout, following the same requirements as boys. Since the minimum time required time to earn Eagle Scout is about 18 months, a time extension has been allowed, ostensibly to ease the transition into the era of the first female Eagle Scout candidates. All scouts who were older than 16 but not yet 18 years of age on February 1, 2019 may be allowed an additional six months to complete the Eagle rank. Additionally, the first class of female Eagle Scouts will be recognized in a historic group ceremony by the end of 2020.', 'Secretary of Defense Robert Gates, and President Gerald Ford are just a small sample of Eagle Scouts.', 'Secretary of Defense Robert Gates, and President Gerald Ford are just a small sample of Eagle Scouts. Since February 2019']}}]}]