10885
Then numbering about 20,000 , VVAW was considered by some ( including the administration of President Richard Nixon ) to be an effective , if controversial , component of the antiwar movement .
 person: Richard Nixon
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Richard Nixon