Two people fishing beside a boat.
The two fishermen own the boat.
Not all people fishing beside a boat own the boat.
exists e1 x1 x2 x3.(a_topic(x1) & beside(e1,x3) & n_boat(x3) & Actor(e1,x2) & v_fish(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_boat(x2) & n_fisherman(x1) & card_eq_2(x1) & Theme(e1,x2) & Actor(e1,x1) & v_own(e1))