27483
The Georgia Tech survey defines the region narrowly , focusing on the urban and suburban counties between Birmingham and Raleigh , and the rural counties that explicitly link those urban and suburban counties .
 Georgia Tech, Birmingham, Raleigh
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Georgia Tech, Birmingham, Raleigh