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

### Instruction:
What is the bzip2 value associated with a gzip of yes, StuffitX of unknown, and ISO/CD image of unknown?

### Inputs:
table_name: table, columns: ['gzip', 'bzip2', 'LHA/LZH', 'StuffIt', 'StuffIt X', 'ISO/CD Image']

### Response:
SELECT bzip2 FROM table WHERE gzip = yes AND StuffIt X = unknown AND ISO/CD Image = unknown