Anchor: Popular history need not come at the expense of thoughtful reflection and serious research, but Johnson's zingers are too often substitutes for those qualities.
Entailed: Johnson often substitutes jokes for thoughtful reflection and research.
Contradiction: Johnson is unaware of any historical policies.
Contradiction: A man is swimming in the ocean.
Contradiction: The person is sitting at a table.
Contradiction: There are no women.
Contradiction: Two dogs play together.