Children performing a play in a gym.
The kids are playing Legis.
The kids are either performing or playing they can't do both.
exists e1 x1 x2 x3.(ne_nam_children(x1) & in(e1,x3) & n_gym(x3) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_play(x2))
exists e1 x1 x2.(ne_org_legis(x2) & n_kid(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))