Utilize the input text as a context reference, choose the right relationship between up and Spotify 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.

“With regard to mobile networks, some Spotify subscribers sign up through their mobile provider, which means some information is shared with them by necessity,” the CEO wrote.

Answer: distributed_by