Given the task definition and input, reply with output. In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Context: He acquired a great reputation as a practitioner, teacher, and writer, and was the first secretary, and in 187172 the president, of the Link Information: In 1847, the American Medical Association was founded in Philadelphia by Nathan Smith Davis as a national professional medical organization. Question: Who was the first president of the organization Alfred served as both secretary and president?
Answer: Nathan Smith Davis