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

### Instruction:
What is 454 gs flx when pacbio is 100-500 mb?

### Inputs:
table_name: table, columns: ['Sequencer', 'Ion Torrent PGM', '454 GS FLX', 'HiSeq 2000', 'SOLiDv4', 'PacBio', 'Sanger 3730xl']

### Response:
SELECT 454 GS FLX FROM table WHERE PacBio = 100-500 Mb