8716
In 1940  Oslo Sporveier  set up the  Oslo trolleybus  network a network of four trolleybus routes but is was abandoned in 1967 .
 Oslo Sporveier, Oslo trolleybus
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Oslo Sporveier, Oslo trolleybus