Q: Is the following statement true?
"Black pepper originated in India and was a popular spice for trade."
A: yes
How to explain the answer: Black pepper was a commonly traded spice from India to the colonies and other places.

Q: Is the following statement true?
"John Lennon produced a son named Julian with Yoko Ono."
A: no
How to explain the answer: Julian Lennon is the son of John Lennon's wife Cynthia.

Q: Yes / no, is the following a verifiable fact?
"The United States Air Force specializes in diving and underwater rescue."
A: no
How to explain the answer: The United States Air Force focuses on planes and other aircraft, not underwater activities, which are performed by the Navy.