81209
During field goal attempts he serves as a second umpire , except in the NFL , where he is the lone official positioned behind the defensive line , as the umpire remains in the offensive backfield .
 organization: NFL
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: NFL 
Answer:
 organization: NFL