Yes / no, is the following a verifiable fact?
"One can find the house of Antonio López de Santa Anna in Mexico City."

Let me think out loud. The house where Antonio López de Santa Anna wrote his memoirs was in Mexico City. The answer is yes.

"Scientists are still making significant progress in Meteorology."
Is the above claim true?
Options:
- yes
- no

Let me think out loud. Meteorology is a science that can be approve upon. The answer is yes.

Is the following a factual statement?
"Former president of the United States, Barack Obama attended Duke University."
Options:
- yes
- no
Let me think out loud. Barack Obama attended a few universities, but none of them were Duke. The answer is no.