Anchor: Children and teacher keeping busy with arts and crafts during class.
Entailed: People are in school.
Contradiction: Kids are riding ponies at the zoo.
Contradiction: The 3-year-old program was used to prevent the poor from accessing medical treatment. 
Contradiction: A bulldozer makes a pile of rocks and dirt.
Contradiction: I suppose he's broken up with her.
Contradiction: Two dogs are outside.