boats out on the water on a foggyday
The boats are in the fog.
If it is foggy you can call it a foggy day, therefore if boats are on water in a foggyday then boats would be found in the fog.
exists x1 x2 x3.(n_water(x2) & a_topic(x1) & n_out(x1) & on(x1,x2) & on(x2,x3) & n_foggyday(x3) & n_boat(x1))
exists p1 x1 x2.(n_fog(x2) & n_boat(x1) & in(x1,x2))