We have three blocks. Lets call them A, B and C. Block A is above B. Block C is above A. Block A has a medium black square. Block B contains a medium black square. And block C contains two medium blue squares. Medium blue square number one is touching the bottom edge of this block. Below a medium yellow square there is medium blue square number two. Below the medium yellow square and medium blue square number two there is medium blue square number one.
Which object is below a medium blue square? the medium blue square which is touching the bottom edge of a block or the medium yellow square?
the medium blue square  which is touching the bottom edge of a block  the medium yellow square  both of them none of them