Task: Text to Code
Input (English): SQL: SELECT Avg ( screen_mode ) FROM phone WHERE Company_name = "Nokia Corporation"
Feedback: Replace screen mode in phone table with rom mib in chip model table .
Output (English): SELECT avg(T1.ROM_MiB) FROM chip_model AS T1 JOIN phone AS T2 ON T1.Model_name  =  T2.chip_model WHERE T2.Company_name = "Nokia Corporation"