Utilize the input text as a context reference, choose the right relationship between Prime and retail 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.

Prime Pantry and AmazonFresh are some of the initiatives taken by Amazon to leverage the huge food retail market in the United States.

Answer: industry