Is the following a factual statement?
"Hanoi has the second most people in Vietnam."
Options:
- yes
- no

Let me think out loud. Hanoi has a population of over 3 million people. The answer is yes.

Is the following sentence factually correct?
"Efforts to increase the population of the Iberian lynx have included cross-breeding with the domesticated house cat."
Options:
- yes
- no

Let me think out loud. The Iberian lynx cannot be cross-bred with a domesticated house cat. The answer is no.

Claim: "The boy has reached his Youth."
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. Youth here refers to age which is different from the entity selected. The answer is no.