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