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

### Instruction:
With less than 1 Championship, what es the Established date of the Niagara Rugby Union League?

### Inputs:
table_name: table, columns: ['Club', 'League', 'Venue', 'Established', 'Championships']

### Response:
SELECT SUM Established FROM table WHERE Championships < 1 AND League = niagara rugby union