Anchor: A man in a striped sweater writes on a small rectangular chalkboard.
Entailed: A teacher shows the class what a rectangle is.
Contradiction: A man in a solid sweater writes.
Contradiction: A man is drawing on a piece of construction paper.
Contradiction: A rhinocerus goes bowling.
Contradiction: A man is licking a chalkboard.
Contradiction: A man is sitting alone.