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

### Instruction:
In what year was the cfl team in edmonton, alberta established?

### Inputs:
table_name: table, columns: ['Team', 'City', 'State/Province', 'League', 'Est.']

### Response:
SELECT Est. FROM table WHERE State/Province = alberta AND League = cfl AND City = edmonton