Question: Sentence A: Is it not customary for anyone purchasing poison to sign a book?

Sentence B: People don't usually leave a signature when purchasing poison?

If sentence A is true, how about sentence B?

Answer: yes

Question: Sentence A: She smiled at him.

Sentence B: She was so happy to see him!

If sentence A is true, how about sentence B?

Answer: it is not possible to tell

Question: Sentence A: If you bemoaned that a particular rose only flowered once a year and for such a short period, he would advise you to take a vacation from work in order to stay at home and watch it bloom.

Sentence B: That is the only rose that you would be able to see for such a short time.

If sentence A is true, how about sentence B?

Answer: it is not possible to tell

Question: Sentence A: More ominously, the Star reports that the actress is actually planning to give him another chance and wants to try a second honeymoon after he gets out of jail for assaulting her.

Sentence B: After he serves his time in prison, she plans on rekindling their love affair.

If sentence A is true, how about sentence B?

Answer:
yes