124888
It occurs primarily in the arid regions of the Southwestern United States in the states of Oklahoma , Texas , New Mexico , Arizona , Colorado , and Nevada .
 Southwestern United States, Oklahoma, Texas, New Mexico, Arizona, Colorado, Nevada
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:
 Southwestern United States, Oklahoma, Texas, New Mexico, Arizona, Colorado, Nevada