There are two blocks, A and B. Block A is to the left of B. Block A contains one small yellow circle and one big black triangle. There is also one medium yellow triangle in this block. Near to and to the right of the big black triangle there is the medium yellow triangle. This object is below the small yellow circle. Block B contains a medium yellow circle and a medium black circle. The medium yellow circle is below and to the left of a small black triangle. To the left of the small black triangle there is the medium black circle.
Which object is to the left of a medium yellow circle? the medium yellow triangle or the medium black circle?
the medium yellow triangle  the medium black circle  both of them none of them