Anchor: You can be fairly sure any ancient coins or artifacts are fakes.
Entailed: Almost all ancient coins or artifacts are fakes. 
Contradiction: You can be almost certain that all ancient coins or artifacts are genuine. 
Contradiction: Clinton has plenty of opportunities for escape. 
Contradiction: It's hard for me to read all these books so I read only those for enjoyment.
Contradiction: The two girls are running through the grass.
Contradiction: The museum is in the direction of the river.