Question part
Yes / no, is the following a verifiable fact?
"Drums purify water using an advanced filtration system."
Answer part
Oh man, I think this is the solution: Drums are musical instruments, not water purification devices. The answer is no.

Question part
Is the following a factual statement?
"Gulf Oil only provides oil to the Gulf of Mexico."
Options:
- yes
- no
Answer part
Oh man, I think this is the solution: Gulf Oil is a large company that provides for many companies, including some international companies. The answer is no.

Question part
Does the following sentence make sense?
"Charles Darwin created the modern theory of evolutionary biology."
Options:
- yes
- no
Answer part
Oh man, I think this is the solution: Charles Darwin pioneered many theories that helped to observe and explain natural biological evolution over time. The answer is yes.

Question part
Is the following statement true?
"Malcolm X fought for African-American civil rights."
Answer part
Oh man, I think this is the solution: Malcolm X was a civil rights activist during his life. The answer is yes.