4871
One advantage of the Feistel model compared to a substitution–permutation network is that the round function does not have to be invertible .
 person: Feistel
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: Feistel 
Answer:
 person: Feistel