Anchor: Construction workers hard at work
Entailed: The people are working hard.
Contradiction: The men are too lazy to work.
Contradiction: Luckily, we know all about this.
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: I won't ask my sister.
Contradiction: The performance is being photographed.