Take context from the input text and decide on the accurate relationship between 'Thomson Reuters' and 'Reuters' from the options provided.
Options: operator, publisher, 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