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He held a number of government positions , although his brother-in-law Horace Walpole ( 1717 - 1797 ) later described him as " a vain and empty man " , promoted beyond his ability by his father-in-law .
 person: Horace Walpole
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Horace Walpole 
Answer:
 person: Horace Walpole