A man is reading a newspaper on a subway.
The man on the subway is reading a newspaper.
on the subway is reading a newspaper is a rephrasing of  reading a newspaper on a subway.
exists e1 x1 x2 x3.(on(e1,x3) & n_subway(x3) & Theme(e1,x2) & Actor(e1,x1) & v_read(e1) & n_newspaper(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_subway(x2) & n_man(x1) & Theme(e1,x3) & Actor(e1,x1) & v_read(e1) & n_newspaper(x3) & on(x1,x2))