There are three blocks, called AAA, BBB and CCC. Block AAA cover a big black triangle and a small yellow square. A medium blue triangle and a small yellow triangle are inside this block. Block AAA contains a medium black circle. The big black triangle is south of the medium blue triangle. The medium black circle is behind the small yellow square and is to the south of the small yellow triangle. A big blue triangle and a medium black square are covered by block BBB. A small black circle is within block BBB. The big blue triangle is to the south of this thing. Behind the medium black square there is this shape. Block CCC contain a medium yellow square and a big yellow triangle. The medium yellow square is behind the big yellow triangle. In front of this object there is a small yellow circle. The small yellow circle is inside and touching block CCC.
Where is the small black circle relative to the big blue triangle?