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

### Instruction:
What 1st leg has 52-70 as the agg.?

### Inputs:
table_name: table, columns: ['Team 1', 'Agg.', 'Team 2', '1st leg', '2nd leg']

### Response:
SELECT 1st leg FROM table WHERE Agg. = 52-70