Anchor: A crowd of people are jumping in the air by the beach.
Entailed: A group of people are near water.
Contradiction: Students are studying biology.
Contradiction: The Main Points are not the most detailed or important parts of a report.
Contradiction: Apparently there were four engineers. 
Contradiction: This stationery is one of our most expensive items.
Contradiction: People on the call list were lied to.