What is the relationship between Fortum and Uniper in the context of the input sentence. Choose an answer from: 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.

So, now that Uniper is a strategic subsidiary and the fifth segment of the Fortum Group, it is only natural that my number one short-term priority will be to have a joint strategy for the Group in place by the end of the year.

Answer: owner_of