CREATE TABLE table_14699 ("Rank" FLOAT, "Heat" FLOAT, "Lane" FLOAT, "Name" TEXT, "Nationality" TEXT, "Time" TEXT)

What was Liu Limin's time in heat 4?
SELECT "Time" FROM table_14699 WHERE "Heat" = '4' AND "Name" = 'liu limin'
SELECT "Time" FROM "table_14699" WHERE "Heat" = '4' AND "Name" = 'liu limin'