Question: Sentence A: Without an effective cost containment program---and I have yet to see one---the Postal Service, reformed or not, cannot be what mailers want.

Sentence B: The Postal Service's cost containment program is very effective as it is now.

If sentence A is true, how about sentence B?

Answer: no

Question: Sentence A: I awaited the right time.

Sentence B: I waited until the time was right.

If sentence A is true, how about sentence B?

Answer: yes

Question: Sentence A: it was just all lights

Sentence B: There were no lights involved.

If sentence A is true, how about sentence B?

Answer: no

Question: Sentence A: Much academic debate surrounds the exact date of the Trojan War, if indeed it ever took place.

Sentence B: Academics unanimously believe that the Trojan war happened.

If sentence A is true, how about sentence B?

Answer:
no