CREATE TABLE table_17778 ("Sequencer" CLOB, "Ion Torrent PGM" CLOB, "454 GS FLX" CLOB, "HiSeq 2000" CLOB, "SOLiDv4" CLOB, "PacBio" CLOB, "Sanger 3730xl" CLOB)

What is 454 gs flx when pacbio is 100-500 mb?
SELECT "454 GS FLX" FROM table_17778 WHERE "PacBio" = '100-500 Mb'
SELECT "454 GS FLX" FROM "table_17778" WHERE "PacBio" = '100-500 Mb'