Two people are fencing and two other people are nearby.
There are four people in the area.
There are two people fencing and two other people nearby.
exists e1 s1 x1 x2.(Theme(s1,x2) & a_nearby(s1) & -(x2 = x1) & n_people(x1) & n_people(x1) & n_people(x2) & card_eq_2(x2) & Actor(e1,x1) & v_fence(e1) & card_eq_2(x1))
exists p1 x1 x2.(n_area(x2) & in(p1,x2) & exists x3.((x1 = x3) & n_people(x3) & card_eq_4(x3)))