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Former President Richard Nixon is to visit China at the invitation of the government beginning Saturday , the Foreign Ministry announced .
 person: Richard Nixon; geographical social political: China; date: Saturday; organization: the Foreign Ministry
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
 Entities: Richard Nixon, China, Saturday, the Foreign Ministry 
Answer:
 person: Richard Nixon; geographical social political: China; date: Saturday; organization: the Foreign Ministry