user: Question: What is the sequencer when ion torrent pgm is 200-400 bp?
Columns: ['Sequencer', 'Ion Torrent PGM', '454 GS FLX', 'HiSeq 2000', 'SOLiDv4', 'PacBio', 'Sanger 3730xl']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Manufacturer', 'Ion Torrent (Life Technologies)', '454 Life Sciences (Roche)', 'Illumina', 'Applied Biosystems (Life Technologies)', 'Pacific Biosciences', 'Applied Biosystems (Life Technologies)']
SQL:

assistant: SELECT "Sequencer" FROM "Table" WHERE "Ion Torrent PGM" = '200-400 bp';