We have three blocks. We call them A, B and C. Block A is to the left of C. Block C is to the left of B. Block A has one medium blue square. Block B contains one medium yellow square. This block also has a medium blue square. The medium blue square is below the medium yellow square. Block C contains two medium black squares. Below medium black square number two is medium black square number one.
What is to the left of the yellow thing? a object which is touching the bottom edge of a block or a medium black square?
object which is touching the bottom edge of a block  medium black square  both of them none of them