A woman looking at boxes of food in crates.
The woman is looking for ants.
A person cannot  be looking for ants and looking at boxes at the same time.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x3) & in(x3,x5) & n_crate(x5) & of(x3,x4) & n_food(x4) & n_box(x3) & Actor(e1,x2) & v_look(e1) & (x1 = x2) & n_woman(x1))
exists e1 x1 x2.(n_woman(x1) & for(e1,x2) & n_ant(x2) & Actor(e1,x1) & v_look(e1))