Q: Is the following a factual statement?
"Former president of the United States, Barack Obama attended Duke University."
Options:
- yes
- no
A: no
How to explain the answer: Barack Obama attended a few universities, but none of them were Duke.

Q: Is the following statement true?
"One can travel to Washington D.C which is the Capital of the United States of America."
A: no
How to explain the answer: Capital here refers to the Federal Headquarters of a country which is different from the entity chosen.

Q: Yes / no, is the following a verifiable fact?
"Safflower exists as an edible asteracae."
A: yes
How to explain the answer: It is a fact that safflower is edible.