A child is fishing on a boat in a river.
The child is outdoors.
River implies outdoors.
exists e1 x1 x2 x3.(on(e1,x2) & in(x2,x3) & n_river(x3) & n_boat(x2) & Actor(e1,x1) & v_fish(e1) & n_child(x1))
exists p1 x1.(n_child(x1) & exists x2.((x1 = x2) & n_outdoors(x2)))