Question: Is the following sentence factually correct?
"Salmon swim upstream against river currents."
Options:
- yes
- no
Ans and explanation: The answer is yes.
Explanation: It's common knowledge that salmon swim upstream against the current.

Question: Yes / no, is the following a verifiable fact?
"Water skiing requires a lot of skill and balance to stay upright."
Ans and explanation: The answer is yes.
Explanation: Water skiing is a sport that involves water and quick speeds and therefore requires immense balance.

Question: Claim: "One can fall into the Aegean Sea."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
Ans and explanation: The answer is yes.
Explanation: The Aegean Sea is a body of water.

Question: Yes / no, is the following a verifiable fact?
"Pi's length is only ten decimal places long."
Ans and explanation:
The answer is no.
Explanation: Pi Is an irrational number that's decimal goes on infinitely on forever.