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

### Instruction:
What is the build date of the model with PRR Class brs24?

### Inputs:
table_name: table, columns: ['PRR Class', 'Builder’s Model', 'Build date', 'Total produced', 'Wheel arrangement', 'Service', 'Power output']

### Response:
SELECT Build date FROM table WHERE PRR Class = brs24