Anchor: At its height it supported a population of nearly 4,000.
Entailed: There were 4000 people living here.  
Contradiction: There were never more than 1000 people living in this place.  
Contradiction: A person jumps into water in a swimsuit.
Contradiction: The little boy is in the air.
Contradiction: Taking gambling lessons for this game is discouraged.
Contradiction: Some places fire people if they come back positive.