A woman speaking into a microphone.
A woman with a microphone is addressing the graduating class.
Speaking into a microphone does not imply addressing the graduating class.
exists e1 x1 x2 x3.(a_topic(x1) & into(e1,x3) & n_microphone(x3) & Actor(e1,x2) & v_speak(e1) & (x1 = x2) & n_woman(x1))
exists e1 e2 x1 x2 x3.(n_class(x3) & Actor(e1,x3) & v_graduate(e1) & Theme(e2,x3) & Actor(e2,x1) & v_address(e2) & with(x1,x2) & n_microphone(x2) & n_woman(x1))