836
Although there are several versions of the circumstances the most extensive account is derived from a letter written by  Abu Hafs al-Urduni  who assumed command of the  Arab Mujahideen in Chechnya  .
 employee of: Abu Hafs al-Urduni, Arab Mujahideen in Chechnya
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:
 employee of: Abu Hafs al-Urduni, Arab Mujahideen in Chechnya