Four people are farming in a field.
Four people are outdoors.
Farming is done outdoors.
exists e1 x1 x2.(in(e1,x2) & n_field(x2) & Actor(e1,x1) & v_farm(e1) & n_people(x1) & card_eq_4(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_outdoors(x2)) & n_people(x1) & card_eq_4(x1))