Refer to the input text as context and select the correct relationship between 'PR Newswire' and 'UBM Plc' from the available options.
Options: headquarters location, creator, parent organization, publisher

Business Wire is a unit of Warren Buffett's Berkshire Hathaway Inc, and PR Newswire is a unit of Britain's UBM Plc (LSE: UBM.L - news ) .
parent organization