What is the D 42 when the D 50 is d 31?
CREATE TABLE table_name_17 (d_42 VARCHAR, d_50 VARCHAR)
SELECT d_42 FROM table_name_17 WHERE d_50 = "d 31"
### Context: CREATE TABLE table_name_17 (d_42 VARCHAR, d_50 VARCHAR) ### Question: What is the D 42 when the D 50 is d 31? ### Answer: SELECT d_42 FROM table_name_17 WHERE d_50 = "d 31"