Utilize the input text as a context reference, choose the right relationship between 'Yanacocha' and 'gold' from the options.
Options: subsidiary, chief executive officer, product/material produced, platform

As you can see here, the first phase of the sulphates project is focused on developing the most profitable deposits and is expected to produce approximately 500,000 gold equivalent ounces per annum through 2030 and extend Yanacocha operations into the 2040.
product/material produced