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

### Instruction:
Which class has a power output larger than 700 and a class of 48?

### Inputs:
table_name: table, columns: ['Class', 'Introduced', 'Number in class', 'Number in service', 'Power output (kW)']

### Response:
SELECT Class FROM table WHERE Power output (kW) > 700 AND Number in class = 48