What is the relationship between 'Telenet' and 'Base' in the context of the input sentence.
Options: stock exchange, original broadcaster, owner of, employer

-- Cable telecoms company Liberty Global (NasdaqGS: LBTYA - news ) 's Belgian subsidiary Telenet (Other OTC: TLGHF - news ) to buy mobile network operator Base from Dutch group KPN (notified Aug. 17/deadline Sept. 21)
owner of