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Biden's visit Wednesday to the Palestinian territories includes meetings in Ramallah with Prime Minister Salam Fayyad and  President   Mahmoud Abbas  .
 President, Mahmoud Abbas
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:
 President, Mahmoud Abbas