Utilize the input text as a context reference, choose the right relationship between Centrica and energy supply from the options. Options: 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.

LONDON - Centrica will cut around 10 percent of its workforce and sell up to 1 billion pounds ($1.56 billion) worth of upstream and wind assets by 2017 as Britain's largest utility looks to focus on energy supply and services.

Answer: industry