CREATE TABLE table_53631 ("Identity" CLOB, "Builder" CLOB, "Built" FLOAT, "Wheel Arrangement" CLOB, "Notes" CLOB)

What is the identity of the brighton works built train?
SELECT "Identity" FROM table_53631 WHERE "Builder" = 'brighton works'
SELECT "Identity" FROM "table_53631" WHERE "Builder" = 'brighton works'