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"
### Context: CREATE TABLE table_name_49 (Id VARCHAR) ### Question: What is the 1938 that has N/A for 1948? ### Answer: SELECT 1938 FROM table_name_49 WHERE 1948 = "n/a"