Utilize the input text as a context reference, choose the right relationship between Lockheed Martin and United Launch Alliance 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.

Orbital is buying rides for its next two Cygnus cargo capsules from United Launch Alliance (ULA), a partnership of Lockheed Martin and Boeing.

Answer: owner_of