A man sitting on a subway looking at the camera.
The man is angry
A man looking at the camera is not necessarily angry.
exists e2 e1 x1 x2 x3 x4.(n_camera(x4) & a_topic(x1) & for(e1,e2) & at(e2,x4) & Actor(e2,x2) & v_look(e2) & on(e1,x3) & n_subway(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
exists s1 x1.(n_man(x1) & Theme(s1,x1) & a_angry(s1))