A man is speaking into a microphone.
The man is a politician.
Not every person who speaks into a mic is a politician.
exists e1 x1 x2.(into(e1,x2) & n_microphone(x2) & Actor(e1,x1) & v_speak(e1) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_politician(x2)))