Two medium black triangles are in a block. One small black triangle is also in this block. It also contains one medium blue circle. One small yellow square is also in this block. To the right of the small black triangle is the small yellow square. It is above the medium blue circle. Near to, to the left of and below medium black triangle number two is medium black triangle number one.
Which object is to the left of a medium black triangle? the small black triangle or the small yellow square?
the small black triangle  the small yellow square  both of them none of them