The lady at the gym is lifting weights.
A woman lies on her back under a barbell.
The lady at the gym is lifting weights does not necessary that she lies on her back under a barbell.
exists e1 x1 x2 x3.(n_gym(x2) & n_lady(x1) & Theme(e1,x3) & Actor(e1,x1) & v_lift(e1) & n_weight(x3) & at(x1,x2))
exists e1 x1 x2 x3.(under(e1,x3) & n_barbell(x3) & on(e1,x2) & n_back(x2) & of(x2,x1) & n_female(x1) & Actor(e1,x1) & v_lie(e1) & n_woman(x1))