What is the relationship between Prime and retail 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.

The complexities of running a government can't be underestimated, and the new Prime Minister and his staff got a blast of the retail end of those complexities this week when they found themselves having to run the government without the machinery in place to do it, and facing three days of Parliament.

Answer: industry