A person points out to the lake with mountains in the background- while a boat floats out on the left.
children swim in the lake
The people aren't necessarily children. The people don't necessarily swim in the lake.
exists e1 p1 s1 x1 x2 x3 x4 x6.(n_left(x6) & n_background-(x4) & n_lake(x2) & exists e2 s2 x5.(a_out(s2) & Manner(e2,s2) & on(e2,x6) & Actor(e2,x5) & v_float(e2) & n_boat(x5)) & while(e1,p1) & in(e1,x4) & a_out(s1) & Manner(e1,s1) & to(e1,x2) & with(x2,x3) & n_mountain(x3) & Actor(e1,x1) & v_point(e1) & n_person(x1))
exists e1 x1 x2.(n_lake(x2) & in(e1,x2) & Actor(e1,x1) & v_swim(e1) & n_child(x1))