Anchor: The brown dog is swimming in the water.
Entailed: A dog swims in water.
Contradiction: A cat goes for a swim.
Contradiction: The dogs are sitting on the couch.
Contradiction: There were community groups in college that did some elderly visits.
Contradiction: I love television shows where there are cliff-hangers that get you addicted. 
Contradiction: Some studies use a small number of sites, that are not similar to case studies.