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Some , like Henry Sidgwick , argue that a certain degree of egoism " promotes " the general welfare of society for two reasons : because individuals know how to please themselves best , and because if everyone were an austere altruist then general welfare would inevitably decrease .
 person: Henry Sidgwick
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: Henry Sidgwick 
Answer:
 person: Henry Sidgwick