Anchor: (In practice, there will probably be a small segment of the population-- presumably at the low end of the income distribution--who will be unhappy about having to buy insurance even at $500.
Entailed: Some people may be unhappy about paying $500 for insurance.
Contradiction: People would be glad to pay $500 for health insurance.
Contradiction: The referees are standing on the field.
Contradiction: A person is riding his bicycle.
Contradiction: I understand.
Contradiction: A train indoors.