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Benjamin Franklin had a hand in creating this currency , of which he said its utility was never to be disputed , and it also met with the " cautious approval " of Adam Smith .
 Benjamin Franklin, Adam Smith
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Benjamin Franklin, Adam Smith