Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Sky, which formed from the combination of Britain's BSkyB, Sky Deutschland (Other OTC: SKDTF - news ) and Sky Italia to serve 20 million customers in Europe, said the group had seen its highest organic customer growth for 11 years in Britain and Ireland (Other OTC: IRLD - news ) , and its highest ever customer growth in Germany and Austria.

Answer: owned_by: Sky Deutschland, Sky; owned_by: Sky Italia, Sky; parent_organization: Sky Deutschland, Sky; parent_organization: Sky Italia, Sky