We are policemans.
We are not policemans.
She is a singer.
She is not a singer
They are baskeball players.
They are not baskeball players.
It is a car.
It is not a car.
She is a doctor.
She is not a doctor.
It is a cat.
It is not a cat.
He is a teacher.
He is not a teacher.
He is from Spain
He is not from Spain
It is a fish
It is not a fish,