Two clowns speak into a microphone.
Two clowns doing pantomime.
The clowns cannot be doing pantomime if they are speaking.
exists e1 x1 x2.(into(e1,x2) & n_microphone(x2) & Actor(e1,x1) & v_speak(e1) & n_clown(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_pantomime(x3) & (x1 = x2) & n_clown(x1) & card_eq_2(x1))