Anchor: A person is climbing a rock-climbing wall.
Entailed: The person is climbing.
Contradiction: The person is watching TV.
Contradiction: The island has only one town.
Contradiction: When instances are chosen on the basis of how easy it is to retrieve the data being collected, this is usually considered a convenience sample.
Contradiction: A flower is planted when important people come to visit the house.
Contradiction: Gauve's wife spoke softly.