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It also covered the states of Alabama , Kentucky , Louisiana , Mississippi , and Tennessee until 1968 when those were split off to form South Central Bell .
 Alabama, Kentucky, Louisiana, Mississippi, Tennessee, South Central Bell
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:
 Alabama, Kentucky, Louisiana, Mississippi, Tennessee, South Central Bell