Premise: She smiled and nodded to him.

Hypothesis: She shook her head in disagreement.
Answer: no

Premise: The defeat of Proposition 226--labor unions can still make political contributions without member approval--contradicts the idea that money doesn't matter in California, argue Cokie Roberts ( This Week ) and Robert Novak ( Capital Gang ).

Hypothesis: There has been a long standing idea in California, that money does not matter to the state.
Answer: it is not possible to tell

Premise: The primary benefit of this rule, as described in the economic analyses, is the costs that would be averted by reducing the risk of BSE becoming established and proliferating in the United States through feed.

Hypothesis: Economic analysis has been used to describe the benefits of this rule.
Answer: yes

Premise: He struggled to get his eyes open.

Hypothesis: It was hard for him to open his eyes.
Answer: yes