There are three blocks. We call them A, B and C. There are two big blue squares in block A. Big blue square number one is touching the bottom edge of this block. It is below a small yellow square. There is also a small black circle in this block. This block also has one big black square. This block also has a medium yellow circle. The small black circle is to the left of the small yellow square. A big yellow square is touching the bottom edge of this block. The small yellow square is above and to the right of the big black square. The big yellow square is below the big black square. Big blue square number two is touching the right edge of this block. Block B is above block A. It has one medium black circle. To the right of block B there is block C which contains a big black triangle, a medium yellow triangle and one small blue square. The big black triangle is to the right of a small yellow square and the medium yellow triangle. The medium yellow triangle is to the left of, near to and below the small yellow square.
Which object is below a small yellow square? the small black circle or the big yellow square?
the small black circle  the big yellow square  both of them none of them