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The Invasion of Dagestan also known as the War in Dagestan and Dagestan War began when the Chechnya-based  Islamic International Brigade  ( IIB ) Islamist militia led by warlords Shamil Basayev and  Ibn al-Khattab  invaded the neighbouring Russian republic of Dagestan on August 7 1999 in support of the Shura of Dagestan separatist rebels .
 top members employees: Islamic International Brigade, Ibn al-Khattab
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:
 top members employees: Islamic International Brigade, Ibn al-Khattab