A group of people attending an event.
A group of people wait for the unveiling of a new gadget.
A group of people attending an event are not necessarily for the unveiling of a new gadget.
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_attend(e1) & n_event(x4) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(n_unveiling(x3) & for(e1,x3) & of(x3,x4) & n_gadget(x4) & a_new(s1) & Theme(s1,x4) & Actor(e1,x1) & v_wait(e1) & of(x1,x2) & n_people(x2) & n_group(x1))