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Among the most notable at the turn of the 19th century was Sally Hemings , who was 3 / 4 white and believed by historians to be a half sister of Martha Wayles Skelton Jefferson by their common father John Wayles .
 Sally Hemings, Martha Wayles Skelton Jefferson, John Wayles
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:
 Sally Hemings, Martha Wayles Skelton Jefferson, John Wayles