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The term " economics " was popularized by such neoclassical economists as Alfred Marshall as a concise synonym for " economic science " and a substitute for the earlier " political economy " .
 person: Alfred Marshall
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: Alfred Marshall 
Answer:
 person: Alfred Marshall