11689
The deal included the option for Lufthansa to sell  BMI  Regional and  Bmibaby  separately as they are not required by IAG ; the deal price would be lowered should Bmibaby not be sold in time .
 subsidiaries: BMI, Bmibaby
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:  BMI, Bmibaby 
Answer:
 subsidiaries: BMI, Bmibaby