People gathering for an event
Humans gathering
People gathering for an event is the same as people gathering.
exists e1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_event(x3) & Actor(e1,x2) & v_gather(e1) & (x1 = x2) & n_people(x1))
exists x1 x2.(n_gathering(x1) & (x1 = x2) & ne_nam_humans(x2) & a_topic(x1))