841
Sorghaghtani was the daughter of Jakha Gambhu the younger brother of the powerful  Kereyid  leader Toghrul ( a.k.a.  Wang Khan  ) .
 employee of: Kereyid, Wang Khan
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Kereyid, Wang Khan 
Answer:
 employee of: Kereyid, Wang Khan