There are two blocks. We call them A and B. Block A is above B. Block A has a big black circle and a big blue circle. This block also contains one small black circle. The small black circle is below the big black circle and the big blue circle. Block B contains one small yellow circle and a small blue circle. The small yellow circle is above the small blue circle.
Which object is above a small circle? the small blue circle or the big black circle?
the small blue circle  the big black circle  both of them none of them