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.

The COVID crisis has definitely accelerated the trend for larger retail groups to rationalize their store portfolio, concentrating on a smaller number of profitable units in prime locations.

Answer: industry