Anchor: The dipterocarp rainforest here includes the tualang tree.
Entailed: There is a Tualang tree in the dipterocarp rainforest here.
Contradiction: The dipterocarp rainforest here lacks a Tualang tree.
Contradiction: I am from a small town and I try not to be critical of others.
Contradiction: A person is skateboarding.
Contradiction: Some people are watching the a capella group sing in the town square.
Contradiction:  He looks like an idiot savant when he insisted otherwise.