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

### Instruction:
How many seasons did the Div J1 have the Emperor's cup in the 3rd round with Tms of more than 18?

### Inputs:
table_name: table, columns: ['Season', 'Div.', 'Tms.', 'Pos.', 'Attendance/G', "Emperor's Cup"]

### Response:
SELECT COUNT Season FROM table WHERE Emperor's Cup = 3rd round AND Div. = j1 AND Tms. > 18