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

### Instruction:
What is Opening, when White is Kramnik, when Year is less than 2001, and when Tournament is "Siemens Giants"?

### Inputs:
table_name: table, columns: ['White', 'Black', 'Year', 'Result', 'Moves', 'Tournament', 'Opening']

### Response:
SELECT Opening FROM table WHERE White = kramnik AND Year < 2001 AND Tournament = siemens giants