There are two blocks, A and B. Block A is to the left of B. Block A has one medium black triangle, one medium black circle and a big yellow circle. The medium black circle is near to and above the big yellow circle. The big yellow circle is touching the right edge of this block. Below the medium black circle there is the medium black triangle. Block B has a small yellow circle and a medium blue triangle. A big black triangle is to the left of and below a medium blue square which is above the medium blue triangle. The small yellow circle is to the left of and above the medium blue triangle.
Which object is to the left of a medium blue thing? the big black triangle or the medium black circle?
the big black triangle  the medium black circle  both of them none of them