Question: Sentence A: Why engage in a futile act?

Sentence B: It makes sense to engage in futile acts.

If sentence A is true, how about sentence B?

Answer: no

Question: Sentence A: That's so, said Julius with a nod.

Sentence B: Julius nodded in agreement.

If sentence A is true, how about sentence B?

Answer: yes

Question: Sentence A: Later, McLaughlin refers to Saddam's Republican Guard as the Red Guard.

Sentence B: The Red Guard was another name for the Saddam's Republican Guard.

If sentence A is true, how about sentence B?

Answer: it is not possible to tell

Question: Sentence A: In the resorts on the coast, many traders are aware that some tourists feel uncomfortable with bargaining, and will give you their best price straight away if you ask them to.

Sentence B: No traders on the coast are willing to provide you with their best offer immediately.

If sentence A is true, how about sentence B?

Answer:
no