The set of whole numbers is a superset of the set of natural numbers.
If A = {set of whole numbers less than 6} and B = {set of prime natural numbers less than 7}, then _________ .
If A = Set of whole numbers and B = Set of natural numbers, then A - B = ___.
If A = set of whole numbers and B = set of natural numbers, then the set of elements belonging to A and B is _____ .