Which Performance has a Test Standard of bs en779, and a Particulate size approaching 100% retention of >2 m, and a Class of f6?
CREATE TABLE table_44091 (
    "Usage" text,
    "Class" text,
    "Performance" text,
    "Performance test" text,
    "Particulate size approaching 100% retention" text,
    "Test Standard" text
)
SELECT "Performance" FROM table_44091 WHERE "Test Standard" = 'bs en779' AND "Particulate size approaching 100% retention" = '>2µm' AND "Class" = 'f6'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Which Performance has a Test Standard of bs en779, and a Particulate size approaching 100% retention of >2 m, and a Class of f6? ### Input: CREATE TABLE table_44091 (
    "Usage" text,
    "Class" text,
    "Performance" text,
    "Performance test" text,
    "Particulate size approaching 100% retention" text,
    "Test Standard" text
) ### Response: SELECT "Performance" FROM table_44091 WHERE "Test Standard" = 'bs en779' AND "Particulate size approaching 100% retention" = '>2µm' AND "Class" = 'f6'