Three blocks, named AAA, BBB and CCC exist. Block BBB covers a big blue triangle and has a medium yellow square. The big blue triangle are below the medium yellow square and a medium black square.Over a big black triangle is this thing. The big black triangle is inside and touching block BBB. The medium black square is within block BBB. This object is over and the big black triangle is in front of the medium yellow square. Block CCC contain a medium black circle and a small yellow triangle. A small black triangle and a small black circle are within this block. The small black triangle and the small yellow triangle are in front of the small black circle. Block CCC covers a big black circle. The medium black circle is in front of the small black triangle and is behind the big black circle. In front of the small yellow triangle is the big black circle. The small yellow triangle is behind the thing which was in front of the small black triangle.
Is the medium yellow square behind all triangles?