146998
In mathematics , Fenchel 's duality theorem is a result in the theory of convex functions named after Werner Fenchel .
 person: Fenchel; person: Werner Fenchel
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: Fenchel, Werner Fenchel 
Answer:
 person: Fenchel; person: Werner Fenchel