A cooking staff working and preparing a meal.
they are sitting on the ground
It would be unlikely that the staff would be preparing a meal while sitting on the ground.
exists e1 e2 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x4) & v_prepare(e2) & n_meal(x6) & n_staff(x4) & of(x4,x5) & n_cooking(x5) & Theme(e1,x3) & Actor(e1,x1) & v_work(e1) & n_meal(x3) & n_staff(x1) & of(x1,x2) & n_cooking(x2))
exists e1 x1 x2.(n_ground(x2) & n_thing(x1) & on(e1,x2) & Actor(e1,x1) & v_sit(e1))