Anchor: The dude admitted that he tried weed once back in school.
Entailed: He admitted to trying weed back in school.
Contradiction: He had never touched weed in his entire life.
Contradiction: The people are walking through a park with no trees
Contradiction: A man is starting a fire.
Contradiction: That is true and it's not the crime.
Contradiction: Two people walk by graffiti on a wall.