A girl is dancing in the valley.
the girl is sexy
Not all girls are sexy.
exists e1 x1 x2.(n_valley(x2) & in(e1,x2) & Actor(e1,x1) & v_dance(e1) & n_girl(x1))
exists s1 x1.(n_girl(x1) & Theme(s1,x1) & a_sexy(s1))