Anchor: The two bare feet of gymnast are seen balancing atop a large, red balance ball at a public event.
Entailed: A person is balancing on a ball.
Contradiction: The event is taking place to watch a swimming relay race.
Contradiction: a group of fish swim to a bear
Contradiction: A gymnast stretches on the floor before her performance.
Contradiction: A man swims laps in a pool.
Contradiction: The red ball is flying through the air.