A man in a brown leather jacket observes a portrait.
The man is taking a picture
The man could not observe a portrait if he were busy taking a picture.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_observe(e1) & n_portrait(x4) & in(x1,x2) & n_jacket(x2) & of(x2,x3) & n_leather(x3) & a_brown(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2))