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Ahead of the visit Egyptian security forces have rounded up hundreds of students at  Cairo  's  Al-Azhar University  an ancient hub of Islamic scholarship that is co-hosting Obama's visit .
 Cairo, Al-Azhar University
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Cairo, Al-Azhar University