There are two blocks, A and B. Block A is to the right of B. Block A contains a medium yellow square. Block B has a medium black triangle, one medium blue square and a big black square. There is also a small blue square in this block. A medium yellow triangle is also in this block. It is near to and to the left of the big black square. To the right of the medium blue square is the medium black triangle. To the right of and above the small blue square there is the big black square.
What is to the left of the medium yellow square? a big thing or a small blue square?
big thing small blue square  both of them none of them