What is the relationship between 'Liberty Global' and 'Telenet' in the context of the input sentence.
Options: subsidiary, publisher, developer, stock exchange

-- 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)
subsidiary