104509
Other areas of Zemel 's research include supply chain management , operations strategy , service operations , and incentive issues in operations management .
 person: Zemel
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: Zemel 
Answer:
 person: Zemel