113585
Some argue also that the shift has been ( from the heavily unionised Northeast and Midwest towards the Southeast and the high supply of workers ( largely immigrant , first-generation , and second-generation ) willing to accept low wages in the Southwest ) , along with increasing labour productivity , which has led to higher levels of output without increases in the total number of workers .
 Northeast, Midwest, Southeast, Southwest
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:
 Northeast, Midwest, Southeast, Southwest