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The presidential election of 1968 resulted in Richard Nixon receiving 301 electoral votes ( 56 % of electors ) , Hubert Humphrey 191 ( 35.5 % ) , and George Wallace 46 ( 8.5 % ) with 13.5 % of the popular vote .
 person: Richard Nixon; person: Hubert Humphrey; person: George Wallace
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: Richard Nixon, Hubert Humphrey, George Wallace 
Answer:
 person: Richard Nixon; person: Hubert Humphrey; person: George Wallace