A girl in a pink dress speaks to everyone over the microphone.
The girl is the guest speaker for the event.
A girl in a pink dress is not necessarily the guest speaker for the event.
exists e1 s1 x1 x2 x3.(n_microphone(x3) & over(e1,x3) & all x4.(n_person(x4) -> to(e1,x4)) & Actor(e1,x1) & v_speak(e1) & in(x1,x2) & n_dress(x2) & a_pink(s1) & Theme(s1,x2) & n_girl(x1))
exists p1 x1 x2 x3 x4.(n_event(x2) & n_speaker(x3) & of(x3,x4) & n_guest(x4) & n_girl(x1) & for(p1,x2) & (x1 = x3))