Anchor: A brown dog is running across the grass with a stick in its mouth.
Entailed: a dog is running across the grass with a stick
Contradiction: A dog has a bone in his mouth
Contradiction: There isn't much to be done, as soon as I start walking I'm out of breath, I can never tone.
Contradiction: Two people were waiting for the train.
Contradiction: Someone is climbing the light post.
Contradiction: I bet that there would be several of them.