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

### Instruction:
What were the Oct. temperatures for the city that had Nov. temperatures of 51/30?

### Inputs:
table_name: table, columns: ['City', 'Jan.', 'Feb.', 'Mar.', 'Apr.', 'May.', 'Jun.', 'Jul.', 'Aug.', 'Sep.', 'Oct.', 'Nov.', 'Dec.']

### Response:
SELECT Oct. FROM table WHERE Nov. = 51/30