Claim: "If one visits McDonald's and eats, one loses weight."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no

Let me think out loud. McDonald's makes oily fast food to be eaten which causes weight gain. The answer is no.

Yes / no, is the following a verifiable fact?
"The ancestors of the Romani people spoke Italian as their native language."

Let me think out loud. The Romani people originated from India, not Italy. The answer is no.

Claim: "A Frogman breathes underwater artificially using an oxygen tank."
Is the claim above correct, and can it be verified by human common sense and without a web search?
Options:
- yes
- no
Let me think out loud. Using scuba gear including oxygen tanks is the definition of a frogman. The answer is yes.