A pair is performing in a ballet.
A couple of people are doing a line dance in a dimly lit bar.
Ballet is not line dance.
exists e1 x1 x2.(in(e1,x2) & n_ballet(x2) & Actor(e1,x1) & v_perform(e1) & n_pair(x1))
exists e1 s1 x1 x2 x3 x4 x5.(Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & in(x3,x5) & n_bar(x5) & a_lit(s1) & Theme(s1,x5) & r_dimly(x5) & n_dance(x3) & of(x3,x4) & n_line(x4) & of(x1,x2) & n_people(x2) & n_couple(x1))