Task: Program Execution
Input (English): Set1: '{2, 3, 5, 7, 8, 11, 12, 17, 18, 19}', Set2: '{2, 3, 5, 7, 12, 14, 15, 16, 18}'. How many elements are there in the intersection of Set1 and Set2 ?
Output (English): 6