CREATE TABLE table_28621 ("Year" FLOAT, "Under-11" TEXT, "Under-13" TEXT, "Under-15" TEXT, "Under-17" TEXT, "Under-19" TEXT)

What is every value for Under-11 if Under-19 is Leong Siu Lynn?
SELECT "Under-11" FROM table_28621 WHERE "Under-19" = 'Leong Siu Lynn'
SELECT "Under-11" FROM "table_28621" WHERE "Under-19" = 'Leong Siu Lynn'