213687
History At the time of Oklahoma statehood in 1907 , Stephens County had only 20 common schools and three high schools , but by the 1930s there were 65 school districts , including the independent school district of Duncan .
 Oklahoma, Stephens, Duncan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Oklahoma, Stephens, Duncan