2335
Optimized Systems and Solutions LLC ( formerly known as  Data Systems Solutions  ) is a wholly owned subsidiary of  Rolls-Royce plc  with offices in the US UK France and the Czech Republic .
 subsidiaries: Data Systems Solutions, Rolls-Royce plc
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 subsidiaries: Data Systems Solutions, Rolls-Royce plc