Anchor: Two men stand at a chalkboard that forms part of a stone wall in front of a number of tables and chairs of which only a few are occupied.
Entailed: A small group convienes together.
Contradiction: Some girls are sitting outside.
Contradiction: One man is teaching a large group of people a lesson using a computer.
Contradiction: The men are swimming the Hudson Bay.
Contradiction: The men are preparing to leave.
Contradiction: Two men sit at a chalkboard.