4770
The line is owned by the municipal company  Kollektivtransportproduksjon  and operated by its subsidiary  Oslo Sporvognsdrift  .
 subsidiaries: Kollektivtransportproduksjon, Oslo Sporvognsdrift
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:  Kollektivtransportproduksjon, Oslo Sporvognsdrift 
Answer:
 subsidiaries: Kollektivtransportproduksjon, Oslo Sporvognsdrift