CREATE TABLE table_name_95 (fleet_number_s_ VARCHAR(255), class VARCHAR(255), quantity_preserved VARCHAR(255), quantity_made VARCHAR(255))
What is Fleet Number(s), when Quantity Preserved is "0", when Quantity Made is 1, and when Class is "Z"?
    
SQL: SELECT fleet_number_s_ FROM table_name_95 WHERE quantity_preserved = "0" AND quantity_made = "1" AND class = "z"