Utilize the input text as a context reference, choose the right relationship between Kathmandu 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.

Several sources who know Mr Duke and the Kathmandu business said he is well known as a top retail operator in New Zealand.

Answer: industry