A man is standing alone in a boat.
The man is going boating on a lake.
A boat does not have to be on a lake and a man on a boat does not mean he is going boating on lake.
exists e1 s1 x1 x2.(in(e1,x2) & n_boat(x2) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 e2 x1 x2.(n_man(x1) & for(e1,e2) & on(e2,x2) & n_lake(x2) & Actor(e2,x1) & v_boat(e2) & Actor(e1,x1) & v_go(e1))