Utilize the input text as a context reference, choose the right relationship between Pueblo Viejo mine and gold 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.

Barrick will deliver gold to RGLD Gold in amounts equal to 7.50% of Barrick’s interest in the gold produced at the Pueblo Viejo mine from July 1, 2015 until 990,000 ounces of gold have been delivered, and 3.75% of Barrick’s interest in gold produced thereafter.

Answer: product_or_material_produced