CREATE TABLE table_70044 ("Name" CLOB, "Pennant" CLOB, "Builder" CLOB, "Laid Down" CLOB, "Launched" CLOB, "Commissioned" CLOB)

What date was the U21 pennant laid down?
SELECT "Laid Down" FROM table_70044 WHERE "Pennant" = 'u21'
SELECT "Laid Down" FROM "table_70044" WHERE "Pennant" = 'u21'