Utilize the input text as a context reference, choose the right relationship between experimental and Channel 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.

Channel 4 was launched in 1982 with a remit to promote innovative and experimental programming and to compete with the state-owned BBC and ITV (LSE: ITV.L - news ) .

Answer: original_broadcaster