CREATE TABLE table_31806 ("Class" CLOB, "Type" CLOB, "No. built  ( Converted* ) " CLOB, "Year built  ( Converted* ) " CLOB, "No. range" CLOB, "Withdrawn" FLOAT)

Tell me the year built for withdrawn of 1983
SELECT "Year built (Converted*)" FROM table_31806 WHERE "Withdrawn" = '1983'
SELECT "Year built (Converted*)" FROM "table_31806" WHERE "Withdrawn" = '1983'