In the context of the input sentence, determine the relationship between 'Pueblo Viejo mine' and 'gold'.
Options: product/material produced, currency, distributed by, platform

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.
product/material produced