A man in a green shirt and red life jacket is sitting in a canoe drifting around the lake.
A man is fishing in the lake.
Drifting around the lake doesn't necessarily imply that he is fishing in it.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_lake(x7) & for(e1,e2) & around(e2,x7) & Actor(e2,x1) & v_drift(e2) & in(e1,x6) & n_canoe(x6) & Actor(e1,x1) & v_sit(e1) & in(x1,x2) & n_jacket(x4) & of(x4,x5) & n_life(x5) & a_red(s2) & Theme(s2,x4) & n_shirt(x3) & a_green(s1) & Theme(s1,x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_man(x1))
exists p1 x1 x2.(n_lake(x2) & in(p1,x2) & exists x3.((x1 = x3) & n_fishing(x3)) & n_man(x1))