Anchor: If two Internet users own the right software, they can talk by telephone over the Net.
Entailed: Two Internet users can communicate with each other using the Net.
Contradiction: It is impossible for Internet to talk using net.
Contradiction: All around the world, mail never goes to where money is. 
Contradiction: The names of the signatories were on the first-ever treaty between China and the United States.
Contradiction: You should never hike at night, but if you find yourself stuck, the mountain huts are lovely accommodations.
Contradiction: It makes complete sense even though it is terrible.