Utilize the input text as a context reference, choose the right relationship between Prime Video and Amazon 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.

"Over the last three years, Prime Video has become an important part of Prime," Amazon said in the e-mail, which was sent to sellers yesterday.

Answer: parent_organization