CREATE TABLE table_127511_1 (pacbio VARCHAR2)

What is 454 gs flx when pacbio is 100-500 mb?
SELECT 454 AS _gs_flx FROM table_127511_1 WHERE pacbio = "100-500 Mb"
SELECT 454 AS "_gs_flx" FROM "table_127511_1" WHERE "100-500 Mb" = "pacbio"