Question: Does the following sentence make sense?
"One can study the works of Lewis Carroll in a library."
Options:
- yes
- no
Ans and explanation: The answer is yes.
Explanation: Lewis Carroll was a writer with many well known works.

Question: Is the following sentence factually correct?
"Groundhogs spend their lives in Antarctica."
Options:
- yes
- no
Ans and explanation: The answer is no.
Explanation: Antarctica is too cold of an environment for groundhogs to survive there.

Question: Yes / no, is the following a verifiable fact?
"Backing vocalists tend to be expensive to maintain."
Ans and explanation: The answer is no.
Explanation: Fees are negotiate between the artist, the label and the backing vocalist.

Question: Is the following sentence factually correct?
"Buddy Holly has contributed to musical projects."
Options:
- yes
- no
Ans and explanation:
The answer is yes.
Explanation: Buddy Holly was an American singer, guitarist and rock and roll musician.