We have three blocks, A, B and C. Block C is to the right of and B is to the left of A. Block A has one medium yellow triangle. Block B has a big yellow square. A medium yellow square is to the left of and below the big yellow square. A small yellow triangle is below the big yellow square. Block C has one big yellow triangle. This block also contains a small yellow triangle. Above the small yellow triangle there is the big yellow triangle.
Which object is to the left of a big yellow triangle? the big yellow square or the medium yellow triangle?
the big yellow square  the medium yellow triangle  both of them none of them