What is the relationship between to and video on demand 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.

"Together we have an even more powerful ability to deliver what our clients and the media industry have long been asking for: a comprehensive cross-platform measurement currency that accounts for all the ways in which content is consumed, whether that happens on a desktop, mobile device, live or time-shifted TV, video on demand or through over-the-top devices."

Answer: distribution_format