Question: Sentence A: And you never told me?

Sentence B: I'm glad you told me about this last week.

If sentence A is true, how about sentence B?

Answer: no

Question: Sentence A: The key interaction between the budget and the economy is the effect of the federal deficit/surplus on the amount of national saving available for investment.

Sentence B: The national saving changes each year.

If sentence A is true, how about sentence B?

Answer: it is not possible to tell

Question: Sentence A: Waste occurs because of coordination failures (In the early days of railroads each line had a different gauge).

Sentence B: Problems in coordination lead to wastage on the railroad.

If sentence A is true, how about sentence B?

Answer: yes

Question: Sentence A: A small museum reopened here in 1998.

Sentence B: The previous museum had closed fifty years earlier.

If sentence A is true, how about sentence B?

Answer:
it is not possible to tell