def intersect(a, b):
    """ Return the intersection of two lists.
        
    Args:
        a (list): A list.
        b (list): Another list.
        
    Returns (list):
        The intersection of the two lists.
    """
    
    # NOTE: Binary operator '&' is built in and returns the intersection of 2 sets.
    return list(set(a) & set(b))