Question: Yes / no, is the following a verifiable fact?
"Many operas include a Diary, or moment when one character sings solo."
Ans and explanation: The answer is no.
Explanation: The solo moment in an opera is known as an aria, not a diary.

Question: Is the following a factual statement?
"Abu Bakr practiced the religion of Islam."
Options:
- yes
- no
Ans and explanation: The answer is yes.
Explanation: Abu Bakr was a prominent figure in Islam.

Question: Does the following sentence make sense?
"All of the camels in the world are born along the Pacific Crest Trail."
Options:
- yes
- no
Ans and explanation: The answer is no.
Explanation: The majority of camels are not in North America.

Question: Is the following a factual statement?
"Avril Lavigne competed at the Summer Olympics in 2000 and 2004."
Options:
- yes
- no
Ans and explanation:
The answer is no.
Explanation: She is a singer, not an Olympic athlete.