Task: Text to Code
Input (English): Step 1: find the stuid of Participates_in table for which actid equals Canoeing.
Step 2: find the stuid of Participates_in table for which actid equals Kayaking.
Step 3: show the rows that are in both the results of step 1 and the results of step 2
Output (English): SELECT stuid FROM Participates_in WHERE actid = "Canoeing" INTERSECT SELECT stuid FROM Participates_in WHERE actid = "Kayaking"