A man sits in a rowboat alone on foggy water.
A man is on a boat.
A rowboat is a kind of boat.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_water(x3) & a_foggy(s1) & Theme(s1,x3) & in(e1,x2) & r_alone(x2) & n_rowboat(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_boat(x2)) & n_man(x1))