Task: Text to Code
Input (English): Step 1: find the Year of festival_detail table for which Location equals United States.
Step 2: find the Year of festival_detail table for which Location equals United States.
Step 3: show the rows that are in both the results of step 1 and the results of step 2
Output (English): SELECT Year FROM festival_detail WHERE Location = "United States" INTERSECT SELECT Year FROM festival_detail WHERE Location = "United States"