Write SQL query to solve given problem: What is the image ID with a predicted class of "parked on"?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT DISTINCT T1.IMG_ID FROM IMG_REL AS T1 INNER JOIN PRED_CLASSES AS T2 ON T1.PRED_CLASS_ID = T2.PRED_CLASS_ID WHERE T2.PRED_CLASS = 'parked on'