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

### Instruction:
What is the date of the k-league cup, which has less than 28 goals, at the jeonju venue?

### Inputs:
table_name: table, columns: ['Name', 'Date', 'Goals', 'Assists', 'Team', 'Venue', 'Opponent', 'Competition', 'Total Gs', 'Total As']

### Response:
SELECT Date FROM table WHERE Venue = jeonju AND Goals < 28 AND Competition = k-league cup