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His mother is concerned that he might be lonely and tries to persuade him to play with the other calves , but when she sees that Ferdinand is content as he is she leaves him alone .
 person: Ferdinand
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Ferdinand