There are two blocks. Lets call them A and B. There is one medium blue triangle in block A. To the left of block A we have block B which contains one medium yellow triangle, one big black square and one small black square. A medium black square is also in this block. It is near to and to the left of the small black square. The medium yellow triangle is below the small black square. The big black square is touching the right edge of this block. It is to the right of and below the small black square.
Which object is to the left of a medium triangle? the small black square or the medium yellow shape?
the small black square  the medium yellow shape both of them none of them