What is the relationship between Red Hat and IBM 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.

I just described the importance of Red Hat Linux and OpenShift to our platform, and Red Hat continued its momentum in the quarter, with the combination of IBM and Red Hat driving strong revenue and bookings growth.

Answer: parent_organization