There are three blocks. We call them A, B and C. Block A contains a medium yellow triangle. Block B is below block A. It contains two big black triangles. Near to big black triangle number two is big black triangle number one. It is to the left of a medium blue square. There is also a small black triangle in this block. It is to the right of big black triangle number two. The medium blue square is to the right of and below big black triangle number two. Below block A there is block C. It contains a big blue square and one medium black square. There are also one medium yellow circle and one big yellow circle in this block. The big blue square is touching the bottom edge of this block. Below, to the left of and near to the medium black square which is near to and below a small yellow square there is the big yellow circle.
Which object is below a medium yellow triangle? the big yellow circle or the small black triangle?
the big yellow circle  the small black triangle  both of them none of them