There are three blocks. Lets call them A, B and C. Block B is below A and block A is below C. Block A has two medium yellow squares. Below medium yellow square number two there is medium yellow square number one. Block B contains one medium black square. Block C contains two medium black squares. Below medium black square number two there is medium black square number one.
Which object is above a medium black square? medium yellow square number two or medium yellow square number one?
medium yellow square  number two medium yellow square  number one both of them none of them