Question: Yes / no, is the following a verifiable fact?
"China has adopted the Japanese yen as an official currency."
Ans and explanation: The answer is no.
Explanation: China uses it's own currency, the Chinese Yuan.

Question: Is the following statement true?
"Professionals in Wrestling must be in top physical condition to win matches."
Ans and explanation: The answer is yes.
Explanation: Wrestling is physically demanding and wrestlers must be in good physical condition.

Question: "The Twelve-tone technique has two different versions."
Is the above claim true?
Options:
- yes
- no
Ans and explanation: The answer is yes.
Explanation: Josef Matthias Hauer first published the twelve-tone technique in 1919 but Arnold Schoenberg made another version in 1923.

Question: "Robin Williams worked as an actor and a comedian."
Is the above claim true?
Options:
- yes
- no
Ans and explanation:
The answer is yes.
Explanation: Robin Williams is well known as an actor and comedian.