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Born in Edinburgh , Scotland , Dr. Houston emigrated with his wife and 4 children to North America in 1969 , and became one of the founders of Regent College , a leading institution of Christian theology and spirituality .
 Edinburgh , Scotland, Houston, Regent College
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Edinburgh , Scotland, Houston, Regent College