14496
Other regional programmes continued to be produced for the region by the two legal franchises Carlton and LWT and the companies were accredited at the end of the production until 2004 when it was replaced by a ITV  London  caption for both companies following the  ITV plc  merger .
 city of headquarters: London, ITV plc
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:  London, ITV plc 
Answer:
 city of headquarters: London, ITV plc