Anchor: Otherwise, the United States would have to police the world alone, which is unsustainable politically (thanks in part to vociferous opposition from many of these same critics), not to mention militarily.
Entailed: It is not sustainable for the United States to police the world alone.
Contradiction: It is sustainable for the United States to police the world alone.
Contradiction: The fence was wood.
Contradiction: The person is wearing shorts
Contradiction: A man is setting a stack of posters on fire.
Contradiction: You sound like you are young.