Utilize the input text as a context reference, choose the right relationship between FedEx and FedEx Ground 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.
Text: While commercial volumes were down significantly due to business closures across the globe, we experienced a surge in residential deliveries at FedEx Ground and in transpacific, and charter flights at FedEx Express, which required incremental cost to serve.
user
subsidiary
assistant