Question: Sentence A: He returned a few minutes later empty handed.

Sentence B: He came back with empty hands after a few minutes.

If sentence A is true, how about sentence B?

Answer: yes

Question: Sentence A: And the reason why the rest of us sit in our armchairs and read about these accomplishments is because we wish we'd done something as interesting with our time.

Sentence B: We wish we did something as interesting.

If sentence A is true, how about sentence B?

Answer: it is not possible to tell

Question: Sentence A: No, but we were both angry, and, I think, said more than we meant.

Sentence B: We told each other some extremely hurtful insults.

If sentence A is true, how about sentence B?

Answer: it is not possible to tell

Question: Sentence A: Federal Reserve researchers estimated that, as of the early 1990s, U.S. investment including education and R and D had declined as a share of GDP since the 1970s.

Sentence B: Federal Reserve researchers found that US investment has declined, especially in higher education.

If sentence A is true, how about sentence B?

Answer:
it is not possible to tell