We have three blocks. We call them A, B and C. Block C is to the left of A. Block A is to the left of B. Block A has one big yellow triangle, a small black circle and one big black circle. To the right of the small black circle which is near to, above and to the right of the big black circle there is a medium yellow square. The big yellow triangle is near to, to the right of and above the square which is to the right of the small black circle. It also has one small blue triangle. Block B has one medium yellow triangle. And block C contains a small blue triangle, one big blue square and one small black square. To the right of and below a small yellow square is a big yellow triangle. The small blue triangle is near to, touching and above the small black square. The big blue square is to the right of the small black square.
Which object is to the left of a medium yellow triangle? the medium yellow square or the big blue square?
the medium yellow square  the big blue square  both of them none of them