Q: Is the following statement true?
"A town will call a Librarian to put out a fire."
A: no
How to explain the answer: This is a job for a fireman, not a librarian.

Q: Is the following a factual statement?
"A Wiki used global online encyclopedia of information."
Options:
- yes
- no
A: yes
How to explain the answer: Wikipedia is a type of wiki in use.

Q: Is the following statement true?
"The female head of Brazil government is Dilma Rousseff."
A: yes
How to explain the answer: Dilma Rousseff is a Brazillian economist by training.