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