5542
Both teams used 12 players , with a handful of NFL rules ( blocking , punt returns ) blended in to the Canadian game .
 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