+ It is a computer/ - It isn't a radio.../ Is it a computer?
+ It is a telephone/ - It isn't a video/... /Is it a telephone?
+ It is a book/ - It isn't a telephone.../ Is it a book?
+ It is a teacher/ - It isn't a doctor/secretary... / Is it a teacher?
+ It is a student/ - It isn't a teacher/ doctor.../ Is it a student?
+They are numbers/ - They aren't dominos.../ Are they numbers?
+ They are names/ - They aren't numbers.../ Are they names?
