Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the diameter of the coin with a € equivalence of 0.60?

### Inputs:
table_name: table, columns: ['Value', '€ equiv.', 'Diameter', 'Weight', 'Composition']

### Response:
SELECT Diameter FROM table WHERE € equiv. = 0.60