Utilize the input text as a context reference, choose the right relationship between Exxon Valdez and Exxon 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.

Keller Rohrback represented fishermen, landowners, and businesses located in Prince William Sound in their action against Exxon to recover damages caused by the Exxon Valdez Oil Spill.

Answer: owned_by