Anchor: However, once you accept these facts, Cairo has lots to offer the visitor; its main museum is an essential part of your vacation experience and its street life is a sure sign that you have come to a totally different culture.
Entailed: Cairo has a main museum that will be essential to the time you spend there.
Contradiction: You don't have to worry about those facts since Cairo has nothing to offer.
Contradiction: The museum in Cairo isn't anything special. 
Contradiction: Crowds are not attracted to the fifth floor.
Contradiction: I really don't know
Contradiction: The people are skipping rocks at the beach.