We have three blocks, A, B and C. Block C is above A. Block B is to the right of C. Block A has one medium blue square. Block B has two medium yellow squares. This block also has one medium blue square. Medium yellow square number one is touching the bottom edge of this block. It is below medium yellow square number two and the medium blue square. Below the medium blue square is medium yellow square number two. And block C contains a medium black square and one medium yellow square. Below the medium yellow square is the medium black square.
What is below the black thing? a medium blue square that is in block A or a medium blue square that is in block B?
medium blue square  that is in block A medium blue square  that is in block B both of them none of them