There are two blocks, A and B. Block A is below B. Block A has a small blue triangle, one big yellow triangle and one medium black square. Above a small black triangle and the medium black square is the big yellow triangle. Near to the small black triangle there is the medium black square. It is touching the bottom edge of this block. The small blue triangle is touching the right edge of this block. It is to the right of the small black triangle. Block B contains a medium yellow triangle.
Which object is below a medium yellow triangle? the small black triangle or the medium black square that is touching the bottom edge of a block?
the small black triangle  the medium black square  that is touching the bottom edge of a block  both of them none of them