Utilize the input text as a context reference, choose the right relationship between 'Thomson Reuters' and 'Reuters' from the options.
Options: publisher, operator, legal form, subsidiary

Thomson Reuters Initiates 10 Million Common Share Repurchase Thomson Reuters Initiates 10 Million Common Share Repurchase The share repurchase will be done in accord with four third-party sellers, with a targeted estimate of 10 million common shares.
subsidiary