Refer to the input text as context and select the correct relationship between 'Starbucks' and 'coffee' from the available options.
Options: product/material produced, publisher, chairperson, distributed by

Starbucks (Swiss: SBUX.SW - news ) , the world's biggest coffee chain, said on Tuesday it had no plans to enter Iran, while Coca-Cola said it was too early to comment.
product/material produced