CREATE TABLE table_36809 ("Series Ep." CLOB, "Episode" FLOAT, "Netflix" CLOB, "Segment A" CLOB, "Segment B" CLOB, "Segment C" CLOB, "Segment D" CLOB)

Which Segment B has a Segment D of stone wool insulation?
SELECT "Segment B" FROM table_36809 WHERE "Segment D" = 'stone wool insulation'
SELECT "Segment B" FROM "table_36809" WHERE "Segment D" = 'stone wool insulation'