Anchor: A boy jumps off a tan rock.
Entailed: A boy is getting exercise.
Contradiction: A boy is jumps off a white rock.
Contradiction: The scud attacks always shock you even two weeks after seeing the first one.
Contradiction: The agencies work to partner with customers and other stakeholders.
Contradiction: people are swimming in the ocean.
Contradiction: I didn't go to aerobics tonight because I was busy at work.