Anchor: But if a friend gave you the precise URL for this column, you could go directly to it.
Entailed: you could go directly to it if your friend gave you a precise URL. 
Contradiction: If you friend gives you an imprecise URL you can go directly to it. 
Contradiction: The dog is laying on the couch.
Contradiction: Getting other people is a good idea.
Contradiction: A boy wants a cookie.
Contradiction: A child is wearing a shirt with a baseball team logo.