We have three blocks. We call them A, B and C. Block A contains a small blue square. This block also has one medium black square. To the right of and far from the medium black square is the small blue square. To the left of block A there is block B with a big yellow square in it. To the left of block A there is block C with a small yellow triangle and one big yellow triangle in it. A small black triangle is also in this block. It is to the left of and near to the big yellow triangle. The small yellow triangle is to the left of the small black triangle and the big yellow triangle.
Which object is to the left of a big yellow triangle? the small black triangle or the medium black square?
the small black triangle  the medium black square  both of them none of them