CREATE TABLE table_42311 ("Country" CLOB, "Automobile Name" CLOB, "Manufacturer" CLOB, "Engine Make/Capacity" CLOB, "Year" CLOB)

In what year was Letecke Zavody N.P., Jinonice the manufacturer?
SELECT "Year" FROM table_42311 WHERE "Manufacturer" = 'letecke zavody n.p., jinonice'
SELECT "Year" FROM "table_42311" WHERE "Manufacturer" = 'letecke zavody n.p., jinonice'