Man escaping a straitjacket while many people watch.
This man is a magician.
Escaping from a straight jacket does not necessarily mean that you are a magician.
exists e1 e2 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x1) & v_watch(e2) & n_thing(x5) & while(e1,x4) & n_people(x4) & n_quantity(x4) & Theme(e1,x3) & Actor(e1,x2) & v_escape(e1) & n_straitjacket(x3) & (x1 = x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_magician(x2)))