68215
Five additional states ( Arkansas , Kentucky , Louisiana , North Carolina , and Tennessee ) have announced that they are switching to a single-drug protocol but , as of April 2014 , have not executed anyone since switching protocols .
 Arkansas, Kentucky, Louisiana, North Carolina, Tennessee
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:
 Arkansas, Kentucky, Louisiana, North Carolina, Tennessee