**Q**
Is the following statement true?
"A Referee usually wear the colors of whichever team is his favorite."
**A**
no
Referees are meant to be impartial and arbitrate disagreements at sporting events. They do not support either of the teams while officiating a game.


Is the following sentence factually correct?
"Transformers perform essential transfers that keep houses and buildings supplied with power."
Options:
- yes
- no
yes
This is the essential function of a transformer.


**Q**
Is the following sentence factually correct?
"The response from the US after the Attack on Pearl Harbor was to join the Second World War."
Options:
- yes
- no
**A**
yes
The US was previously not engaging directly in the world war. However, after the direct attack from Japan on Pearl Harbor, the US declared war on the Axis powers directly.


Claim: "A Joule lies deep in the Earth, near where diamonds are found."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
no
A joule is a unit of energy, not a precious gem.


**Q**
Yes / no, is the following a verifiable fact?
"Preventive healthcare increases the cost of healthcare unnecessarily."
**A**
no
Preventive healthcare lowers the overall cost of total medical expenditures.


**Q**
Is the following a factual statement?
"Leonardo da Vinci painted the Mona Lisa."
Options:
- yes
- no
**A**
yes
Leonardo da Vinci is a well-respected artist and one of his works was the Mona Lisa.