A worker in a vest is inspecting tiles on a roof.
The man falls into the lake.
A LAKE IS NOT A ROOF
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_roof(x4) & Theme(e1,x3) & Actor(e1,x1) & v_inspect(e1) & n_tile(x3) & in(x1,x2) & n_vest(x2) & n_worker(x1))
exists e1 x1 x2.(n_lake(x2) & n_man(x1) & into(e1,x2) & Actor(e1,x1) & v_fall(e1))