Sentence 1: The ruling is seen as a victory for constitutional purists and a political blow to President Clinton, who had hoped to use the threat (if not the reality) of a line-item veto as leverage in budget negotiations with Congress.

Sentence 2: President Clinton hoped to set leverage to budget negotiations with Congress.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: No amount of chat will ever restore their virility.

Sentence 2: Their virility will not come back through chat.
Is this second sentence entailed by the first?

Answer: yes

Sentence 1: There he would stand, his back turned to us like the contemplative artist figure in a painting by Caspar David Friedrich, and reflect on the glory and folly of mankind.

Sentence 2: He would spend at least two hours contemplating issues on mankind.
Is this second sentence entailed by the first?

Answer:
it is not possible to tell