A fisherman fishes at the bank of a foggy river.
There are fish in the water.
You cannot infer that there are fish in the water just because he is fishing at the bank of a foggy river.
exists e1 s1 x1 x2 x3.(n_bank(x2) & at(e1,x2) & of(x2,x3) & n_river(x3) & a_foggy(s1) & Theme(s1,x3) & Actor(e1,x1) & v_fish(e1) & n_fisherman(x1))
exists p1 x1 x2.(n_water(x2) & in(p1,x2) & exists x3.((x1 = x3) & n_fish(x3)))