There are two blocks, A and B. Block A has one big blue circle. Above block A we have block B which contains a big black square, one small black square and a medium blue triangle. The big black square is below and near to a medium yellow circle which is above the small black square and a medium yellow square. The medium yellow circle is below the medium blue triangle.
What is below the medium yellow square? a medium blue triangle or a medium yellow circle?
medium blue triangle  medium yellow circle  both of them none of them