10642
In 1948  Nixon  was a member of the United States House of Representatives serving on the  House Un-American Activities Committee  which was investigating communism in the United States .
 employee of: Nixon, House Un-American Activities Committee
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
 Entity Pairs:  Nixon, House Un-American Activities Committee 
Answer:
 employee of: Nixon, House Un-American Activities Committee