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Presidential speech writer William Safire had prepared an " In Event of Moon Disaster " announcement for Nixon to read in the event the Apollo 11 astronauts were stranded on the Moon .
 person: William Safire; person: Nixon; location: Moon
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: William Safire, Nixon, Moon 
Answer:
 person: William Safire; person: Nixon; location: Moon