Utilize the input text as a context reference, choose the right relationship between extra and Nine 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.

News Corp, Telstra and Seven West Media agreed on Tuesday to pay $2.51 billion for six years from 2017 for AFL rights, a little over a week after the NRL granted an extra free-to-air game to Nine Entertainment Co in a deal worth $925 million over five years starting in 2018.
original_broadcaster