Anchor: It is set to make entry impossible to one who does not have the words or who is unfriendly.
Entailed: Entry is impossible if you do not know the words or are unfriendly.
Contradiction: Entry is easy for any and everyone.
Contradiction: A woman working
Contradiction: The national gallery and royal Scottish academy are twins. 
Contradiction: The lines are always closed.
Contradiction: There are two people near a body of water.