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

### Instruction:
What diagram built in 1962 has a lot number smaller than 30702?

### Inputs:
table_name: table, columns: ['Lot No.', 'Diagram', 'Built', 'Builder', 'Fleet numbers']

### Response:
SELECT MIN Diagram FROM table WHERE Built = 1962 AND Lot No. < 30702