An African child smiling at the camera.
The child's back is towards the camera.
One cannot be smiling at the camera and have their back towards the camera.
exists e1 s1 x1 x2 x3.(n_camera(x3) & a_topic(x1) & at(e1,x3) & Actor(e1,x2) & v_smile(e1) & (x1 = x2) & n_child(x1) & a_african(s1) & Theme(s1,x1))
exists p1 x1 x2 x3.(n_camera(x3) & n_back(x2) & of(x2,x1) & n_child(x1) & towards(x2,x3))