Anchor: Prudie is hearing a great deal about Viagra--but mercifully not from her readers.
Entailed: There are a lot of gossip about Viagra.
Contradiction: Viagra is not a popular drug at all, people rarely talk about it. 
Contradiction: Two people are sitting on the couch.
Contradiction: A woman is on her knees with a dog.
Contradiction: they hated each other
Contradiction: people are skiing