What is the 1938 that has N/A for 1948?
CREATE TABLE table_name_49 (
    Id VARCHAR
)
SELECT 1938 FROM table_name_49 WHERE 1948 = "n/a"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the 1938 that has N/A for 1948? ### Input: CREATE TABLE table_name_49 (
    Id VARCHAR
) ### Response: SELECT 1938 FROM table_name_49 WHERE 1948 = "n/a"