We have three blocks. We call them A, B and C. Block A has a medium yellow square. Below block A is block B. It contains a medium yellow circle, a big yellow square and one small blue circle. Far from the big yellow square which is to the right of and near to the small blue circle is the medium yellow circle. Finally, we have block C. It is above block B. It has one small yellow square.
What is below the small yellow square? a big shape or a medium yellow square?
big shape medium yellow square  both of them none of them