There are three blocks. Lets call them A, B and C. Block B is to the left of and A is below C. Block A contains one medium yellow square. Block B contains a medium blue square. This block also has one medium black square. Below the medium black square there is the medium blue square. And block C contains two medium blue squares. Below medium blue square number two there is medium blue square number one.
What is below the black thing? a medium blue square or a yellow thing?
medium blue square  yellow thing both of them none of them