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
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: "The History of China consists of the home of one of the most vast walls in the world, The Great Wall of China."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
yes
The History of China allows for The Great Wall of China is a symbol of strength and an important monument in Chinese History.

Yes / no, is the following a verifiable fact?
"Alexander Scriabin began building pianos after being fascinated with piano mechanisms."
yes
Scriabin sometimes gave away pianos he had built to house guests.

Does the following sentence make sense?
"The nation of Brazil has adopted the Unicorn as it's national symbol."
Options:
- yes
- no
no
Brazil has not adopted the unicorn as it's national symbol.