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

### Instruction:
In 1912 when the U.S used sapphire, what was the Hindu birthstone?

### Inputs:
table_name: table, columns: ['Month', '15th- 20th century', 'U.S. (1912)', 'U.S. (2013)', 'Britain (2013)', 'Hindu']

### Response:
SELECT Hindu FROM table WHERE U.S. (1912) = sapphire