Anchor: a skateboarder skates in the pool.
Entailed: A skater is in the pool.
Contradiction: A skate swims in the pool.
Contradiction: Challenges in analysis development weren't discussed in the 2001 report (GAO-01-1005T, July 25,2001).
Contradiction: There are men near the water.
Contradiction: A child plays on a slide.
Contradiction: Johnny was at Glorieta.