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

### Instruction:
What U15 3rd Quad has a U15 2nd Quad of ACGS?

### Inputs:
table_name: table, columns: ['Crew', 'Open 1st VIII', 'Open 2nd VIII', 'Open 3rd VIII', 'U16 1st VIII', 'U16 2nd VIII', 'U16 3rd VIII', 'U15 1st Quad', 'U15 2nd Quad', 'U15 3rd Quad', 'U15 4th Quad', 'U15 5th Quad', 'U15 6th Quad']

### Response:
SELECT U15 3rd Quad FROM table WHERE U15 2nd Quad = acgs