A person rows a boat over a large body of water.
A person rows a boat.
If a person rows a boat over a body of water then he is still rowing a boat.
all x1.(n_boat(x1) -> exists s1 x2 x3 x4 x5.(a_topic(x2) & over(x2,x4) & of(x4,x5) & n_water(x5) & n_body(x4) & a_large(s1) & Theme(s1,x4) & for(x2,x1) & Time(x2,x3) & n_row(x3) & n_person(x2)))
all x1.(n_boat(x1) -> exists x2 x3.(a_topic(x2) & for(x2,x1) & Time(x2,x3) & n_row(x3) & n_person(x2)))