We have two blocks. Lets call them A and B. Block A is to the right of B. Block A contains one medium black square and a medium blue square. The medium black square is below the medium blue square. Block B has one medium black square. There is also a medium yellow square in this block. It also contains one medium blue square. Below the medium yellow square there is the medium black square. Below the medium yellow square and the medium black square is the medium blue square.
What is below the yellow thing? a medium black square that is in block A or a medium black square which is in block B?
medium black square  that is in block A medium black square  which is in block B both of them none of them