In the context of the input sentence, determine the relationship between 'Starbucks' and 'coffee'.
Options: product/material produced, distribution format, chief executive officer, position held

Sept 24 Starbucks Corp, the world's biggest coffee chain, promised to raise the average wage for its UK staff to just under 8 pounds ($12.18) an hour from November regardless of age, the Financial Times reported.
product/material produced