Anchor: Exotic plants from every corner of the British Empire were subsequently brought here before being transplanted to other gardens on the island.
Entailed: Some exotic plants on the island are not native to it.
Contradiction: All plants on the island are native to the island.
Contradiction: We do not like to go out on weekends.
Contradiction: Two men are in a boat on a body of water.
Contradiction: There is no one at the fountain at the harbor.
Contradiction: Tuppence is speaking softly to someone.