An elderly woman is working at a concession stand.
The woman is working.
woman is working is same as woman working
exists e1 s1 x1 x2 x3.(at(e1,x2) & n_stand(x2) & of(x2,x3) & n_concession(x3) & Actor(e1,x1) & v_work(e1) & n_woman(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 x1.(n_woman(x1) & Actor(e1,x1) & v_work(e1))