1449
From 1993 through 1999 , the number of Border Patrol agents doubled from 4 , 000 to 8 , 000 .
 Border Patrol, Border Patrol agents
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 Border Patrol, Border Patrol agents