11831
Following the 1978 Saur Revolution and the September 1979 assassination of Afghan President  Nur Muhammad Taraki  the Soviet Union sent around troops to the Democratic Republic of  Afghanistan  to help its southern neighbor defeat a nationwide mujahideen insurgency .
 None
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 NA: Nur Muhammad Taraki, Afghanistan