We have two blocks, A and B. Block A is above B. Block A contains one medium yellow circle and a small yellow square. The medium yellow circle is below the small yellow square. Block B has a medium black circle and one big yellow square. There is also a small blue triangle touching the bottom edge of this block. It is near to the big yellow square. The medium black circle is above the small blue triangle and the big yellow square.
What is below the medium yellow circle? a big thing or a medium black thing?
big thing medium black thing both of them none of them