there are human faces and you know that they're inverted right so that means to be able to say this 180 degrees you've identified that there are humans faces in the image similarly like look at the first image there's a bird and there is it you know there is a tree and so on but but but you know that if the normal view would have been that the bird is like if it was tilted by 90 degrees the tree would have the bark would have been horizontal and the bird would be standing standing in the same vertical position so this is basically trying to