Task: Text to Code
Input (English): Step 1: For each row in screen_mode table, find the corresponding rows in phone table.
Step 2: find Company_name of the results of step 1 whose Type equals Graphics and Accreditation_type equals Nokia Corporation
Output (English): SELECT T2.Company_name FROM screen_mode AS T1 JOIN phone AS T2 ON T1.Graphics_mode = T2.screen_mode WHERE T1.Type = "Graphics" AND T2.Accreditation_type = "Nokia Corporation"