Pickers working out on a farm.
Pickers sitting on a farm.
Pickers cannot be working when they are sitting.
exists e1 s1 x1 x2.(a_out(s1) & Manner(e1,s1) & on(e1,x2) & n_farm(x2) & Actor(e1,x1) & v_work(e1) & n_picker(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_farm(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_picker(x1))