Task: Text to Code
Input (English): Step 1: find the Location of station table.
Step 2: find the number of rows of each value of Location in station table.
Step 3: find Location in station table whose corresponding value in step 2 is greater than or equals 15.
Step 4: show the rows that are in the results of step 1 but not in the results of step 3
Output (English): SELECT Location FROM station EXCEPT SELECT Location FROM station GROUP BY Location HAVING Count ( * ) > = 15