195079
History Almost 200 years before canal vacations became popular , Thomas Jefferson , then ambassador to France before he became the third President of the United States , wrote to a friend about the Canal du Midi in southern France .
 Thomas Jefferson
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Thomas Jefferson