CREATE TABLE table_40290 ("Week of" TEXT, "Tier" TEXT, "Winner" TEXT, "Runner-up" TEXT, "Semi finalists" TEXT)

What is the Runner-up with the tier was tier ii, and a Winner of gigi fern ndez natalia zvereva 5 7, 6 1, 6 4?
SELECT "Runner-up" FROM table_40290 WHERE "Tier" = 'tier ii' AND "Winner" = 'gigi fernández natalia zvereva 5–7, 6–1, 6–4'
SELECT "Runner-up" FROM "table_40290" WHERE "Tier" = 'tier ii' AND "Winner" = 'gigi fernández natalia zvereva 5–7, 6–1, 6–4'