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A former student at  Cairo  's  Al-Azhar University  Attar is accused of spying for Israel's Mossad intelligencs service and has been described in the press as a homosexual and a convert to Christianity .
 city of headquarters: Cairo, Al-Azhar University
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:
 city of headquarters: Cairo, Al-Azhar University