300226
Hall read the theories of a number of influential classical economists , including Malthus , David Ricardo and Adam Smith .
 person: Malthus; person: David Ricardo; person: Adam Smith
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: Malthus, David Ricardo, Adam Smith 
Answer:
 person: Malthus; person: David Ricardo; person: Adam Smith