220
From his base on The Washington Post ' s editorial page , Herblock has sprayed ink on big issues and big shots , from Vietnam to Watergate and the Soviet bear , from presidents Truman to Nixon and Clinton .
 geographical social political: Vietnam; geographical social political: Soviet; organization: The Washington Post; person: his; person: Herblock; person: big shots; person: presidents; person: Truman; person: Nixon; person: Clinton
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 geographical social political: Vietnam; geographical social political: Soviet; organization: The Washington Post; person: his; person: Herblock; person: big shots; person: presidents; person: Truman; person: Nixon; person: Clinton