Task: Text to Code
Input (English): Step 1: For each row in artist table, find the corresponding rows in files table.
Step 2: find artist's artist_name, gender of the results of step 1 whose formats contains Mar
Output (English): SELECT T1.artist_name , T1.gender FROM artist AS T1 JOIN files AS T2 ON T1.artist_name = T2.artist_name WHERE T2.formats LIKE "Mar"