There are three blocks, called AAA, BBB and CCC. Covered by block CCC is block BBB. A big blue triangle is covered by block BBB. Block BBB contains a small black triangle which is to the north of a big black circle. Block BBB covers the big black circle. South of the big blue triangle is the big black circle. A big blue triangle and a big black triangle are covered by block CCC. A small yellow circle is within block CCC. South of the big blue triangle is this thing. In front of this object is the big black triangle.
Are all small black triangles in all blocks?