Anchor: A man in a field wearing a backpack and there are sheep and mountains behind him.
Entailed: A man is in a field wearing a backpack
Contradiction: A man is in a field not wearing a backpack
Contradiction: It is 6:00 a.m. at the equator.
Contradiction: They are only useful when uncertainties are involved with contract performance. 
Contradiction: A man is reaching up on tip toes.
Contradiction: The FDA has the authority to add preproduction design controls to the regulation.