People sitting at tables at some sort of festival.
People dancing at a festival.
One cannot be sitting and dancing at the same time.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x4) & of(x4,x5) & n_festival(x5) & n_sort(x4) & at(e1,x3) & n_table(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists e1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_festival(x3) & Actor(e1,x2) & v_dance(e1) & (x1 = x2) & n_people(x1))