CREATE TABLE table_name_28 (test_standard VARCHAR, usage VARCHAR, class VARCHAR)

Which Test Standard has a Usage of secondary filters, and a Class of f5? Question 4
SELECT test_standard FROM table_name_28 WHERE usage = "secondary filters" AND class = "f5"
SELECT "test_standard" FROM "table_name_28" WHERE "class" = "f5" AND "secondary filters" = "usage"