Anchor: The answer, of course, is that we work so hard because we are determined to get ahead--an effort that (for Americans as a society) is doomed to failure, because competition for status is a zero-sum game.
Entailed: We work so hard because we are determined to get ahead.
Contradiction: We do not work at all.
Contradiction: some men standing in a park
Contradiction: Some people are building gingerbread houses.
Contradiction: Energy was measured exactly.
Contradiction: Little is finished.