CREATE TABLE table_13702 ("Year" FLOAT, "Labour" FLOAT, "Lib Dem" FLOAT, "Green" FLOAT, "IWCA" FLOAT, "Independent" FLOAT, "Conservative" FLOAT)

Name the highest Labour with Lib Dem larger than 21?
SELECT MAX("Labour") FROM table_13702 WHERE "Lib Dem" > '21'
SELECT MAX("Labour") FROM "table_13702" WHERE "Lib Dem" > '21'