Three men in a boat on the water.
They are fishing
Just because the men are in boat does not mean the men are fishing.
exists x1 x2 x3.(n_water(x3) & a_topic(x1) & in(x1,x2) & on(x2,x3) & n_boat(x2) & n_man(x1) & card_eq_3(x1))
exists e1 x1.(n_thing(x1) & Actor(e1,x1) & v_fish(e1))