81205
The " head linesman " ( H or HL ) , or " down judge " ( DJ ) in the NFL , stands at one end of the line of scrimmage ( usually the side opposite the press box , always with the chain crew ) , looking for possible offsides , encroachment and other fouls before the snap .
 NFL
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 NFL