We have three blocks, A, B and C. Block A contains a medium yellow triangle. A medium blue circle and one small black square are also in this block. Touching the small black square there is the medium yellow triangle. The medium blue circle is to the left of and above the medium shape which is touching the small black square. Block B is above block A. It contains one small yellow square and one big blue triangle. The small yellow square is below the big blue triangle. Finally, we have block C to the left of block A. It has two small blue circles. This block also has a medium yellow circle and one big yellow triangle. Small blue circle number one is above small blue circle number two which is touching and to the left of the medium yellow circle. Below a medium black triangle is small blue circle number two. This block also has a small yellow circle. Below the big yellow triangle there is the medium yellow circle.
Which object is below a small yellow square? the medium black triangle or the big yellow triangle?
the medium black triangle  the big yellow triangle  both of them none of them