Are you from Thailand?
No I'm not . I'm from Iran.
Where are you from?
We are from Australia. / I am from Australia.
This is a flag for...
Brazil
Where is he from?
He is from Brazil.
This is a flag for...
Mexico
Are they from Thailand?
Yes,they are.
Where is she from?
She is from the U.S.A.
This flag is from...
Vietnam
Where are they from?
They are from Korea.
Is he from Korea?
No, he isn't. He's from Vietnam.