9723
The World  Almanac was sold to Ripplewood Holdings '  WRC Media  in 1999 .
 subsidiaries: The World, WRC Media
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:  The World, WRC Media 
Answer:
 subsidiaries: The World, WRC Media