We have three blocks. We call them A, B and C. Block A contains a medium yellow square. Block B is above block A. It has one medium blue square and a medium black square. Below the medium black square there is the medium blue square. To the left of block A there is block C. It contains one medium yellow square and a medium black square. The medium yellow square is touching the bottom edge of this block. It is below the medium black square.
Are all medium yellow squares below a medium square which is below a medium black thing?