Young women are singing in a performance.
 Young women are singing in a theater.
All performances are not in a theater.
exists e1 s1 x1 x2.(in(e1,x2) & n_performance(x2) & Actor(e1,x1) & v_sing(e1) & n_woman(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_theater(x2) & Actor(e1,x1) & v_sing(e1) & n_woman(x1) & a_young(s1) & Theme(s1,x1))