What is the relationship between United Rentals and equipment rental 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.

And United Rentals Inc. became one of the largest equipment rental companies in the world under Mr. Jacobs’s leadership, with a market value or more than $11 billion.

Answer: industry