Anchor: Greyhounds race on a track.
Entailed: Dogs racing on a track.
Contradiction: Rabid bears mauling innocent picnickers.
Contradiction: The dogs were all sick and unable to race so they stayed at the vet all day and the races were canceled.
Contradiction: The peninsula has no airports and one needs to charter a boat to access one.
Contradiction: I read a book about Napoleon.
Contradiction: The dog is waiting to be fed from the food counter.