Is the following a factual statement?
"Mary of Teck died before her husband, George VI."
Options:
- yes
- no
no
George VI died in 1952, Mary of Teck died in 1953.

Claim: "Swordfish practices shoaling and schooling and are seen in group aggregations."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
no
Swordfish swim alone or in very loose aggregations.

Is the following statement true?
"Rainbows pop up in the sky whenever there is rain and sunlight."
yes
Rainbows are caused by the diffraction of sunlight through water.

"Alan Greenspan served as Chair of the Federal Reserve and won the Presidential Medal of Freedom."
Is the above claim true?
Options:
- yes
- no
yes
Alan Greenspan attained the Presidential Medal of Freedom Award for his work as Chair of the Federal Reserve and other work in economics and politics.